Word Knowledge · 158 words

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Word	Definition	Example
Abandon	To leave behind completely	They had to abandon the truck in the mud.
Abundant	Plentiful; more than enough	Water was abundant after the storm.
Accurate	Correct and exact	The map was accurate down to the last trail.
Acquire	To get or obtain	He will acquire new skills in training.
Adequate	Enough; sufficient	We have adequate supplies for a week.
Adjacent	Next to; nearby	The barracks are adjacent to the mess hall.
Alter	To change	Rain may alter the route.
Anticipate	To expect; to look ahead to	We anticipate delays at the gate.
Approach	To come near; a way of doing something	Approach the checkpoint slowly.
Assemble	To put together; to gather	Assemble the rifle in the correct order.
Assist	To help	The medic will assist the injured soldier.
Brief	Short in time; to give instructions	The sergeant gave a brief update.
Cautious	Careful to avoid danger	Be cautious on the wet rocks.
Cease	To stop	Cease fire when the signal sounds.
Conceal	To hide from view	Conceal the equipment under the netting.
Confirm	To make sure something is true	Confirm the coordinates before you move.
Consume	To use up; to eat or drink	The generator consumes a gallon an hour.
Deliberate	Done on purpose; careful	It was a deliberate choice, not an accident.
Diminish	To make or become smaller	The supplies will diminish by Friday.
Durable	Long-lasting; hard to wear out	These boots are durable.
Eliminate	To remove or get rid of	Eliminate any wrong answers first.
Essential	Absolutely necessary	Water is essential in the desert.
Establish	To set up or create	Establish a base camp by dark.
Evident	Easy to see; obvious	The damage was evident from the road.
Exceed	To go beyond a limit	Do not exceed the weight limit.
Fatigue	Extreme tiredness	Fatigue set in after the 12-mile march.
Frequent	Happening often	Frequent checks keep the engine running.
Hazard	A danger or risk	Loose wires are a fire hazard.
Identical	Exactly the same	The two keys are identical.
Inspect	To look at closely	Inspect the tires before each trip.
Maintain	To keep in good condition; to keep up	Maintain your pace on the run.
Mandatory	Required; not optional	Helmets are mandatory on the range.
Obtain	To get	Obtain a signature from the officer.
Obvious	Easy to see or understand	The answer was obvious once he explained it.
Portion	A part of a whole	Eat only a portion of the ration.
Precise	Exact and accurate	The measurements must be precise.
Prohibit	To forbid	Rules prohibit phones in the test room.
Rapid	Fast	The river has a rapid current.
Reluctant	Unwilling; hesitant	She was reluctant to volunteer.
Require	To need	This job requires a security clearance.
Rigid	Stiff; not bending	The frame is rigid steel.
Secure	Safe; to make safe or fasten	Secure the load before driving.
Sufficient	Enough	Two hours is sufficient for the drill.
Transmit	To send from one place to another	Transmit the message on channel two.
Vacant	Empty; not occupied	The bunk by the door is vacant.
Verify	To check that something is true	Verify the serial number.
Visible	Able to be seen	The flare was visible for miles.
Vital	Extremely important; necessary for life	Clean water is vital.
Abrupt	Sudden and unexpected	The convoy came to an abrupt stop.
Adhere	To stick to; to follow closely	Adhere to the safety checklist.
Adverse	Harmful; unfavorable	Adverse weather grounded the flights.
Allocate	To set aside for a purpose	Allocate two hours for weapons cleaning.
Ambiguous	Unclear; having more than one meaning	The order was ambiguous, so he asked again.
Apprehensive	Worried or nervous about the future	He was apprehensive before the jump.
Arbitrary	Based on random choice, not reason	The cutoff felt arbitrary.
Assess	To judge or evaluate	Assess the damage before reporting.
Audible	Able to be heard	The alarm was barely audible over the engines.
Candid	Honest and direct	Give me a candid opinion of the plan.
Coherent	Clear and logical	His report was coherent and brief.
Compel	To force	The storm compelled us to turn back.
Comply	To obey; to follow a rule	All units must comply with the order.
Comprehend	To understand	Read it twice to comprehend the instructions.
Concise	Short and to the point	Keep the radio message concise.
Conform	To follow the rules or fit a standard	Uniforms must conform to regulation.
Consecutive	Following one after another	Three consecutive days of rain.
Contaminate	To make dirty or unsafe	Fuel can contaminate the water supply.
Credible	Believable	The witness gave a credible account.
Deficient	Lacking; not enough	The unit was deficient in radios.
Deteriorate	To get worse over time	The road deteriorated after the floods.
Detect	To discover or notice	The sensor can detect smoke early.
Disperse	To scatter or spread out	The crowd dispersed after the announcement.
Elaborate	Detailed and complex; to explain further	Please elaborate on the plan.
Emphasize	To stress; to give special importance to	The instructor emphasized safety.
Endure	To put up with; to last	Recruits endure long days in basic training.
Erratic	Unpredictable; irregular	The engine ran at an erratic speed.
Exempt	Free from a duty or rule	Medics were exempt from the detail.
Expedite	To speed up	Expedite the shipment of parts.
Feasible	Possible; able to be done	A night crossing is feasible.
Hostile	Unfriendly; enemy	They entered hostile territory.
Imminent	About to happen	A storm is imminent.
Impartial	Fair; not taking sides	The referee stayed impartial.
Implement	To put into action	Implement the new schedule Monday.
Inevitable	Certain to happen	Delays were inevitable with that fog.
Integrity	Honesty and strong morals; soundness	The officer was known for integrity.
Intermittent	Stopping and starting	Intermittent radio contact all night.
Jeopardize	To put at risk	One mistake could jeopardize the mission.
Lenient	Not strict; merciful	The sergeant was lenient about the late report.
Meticulous	Extremely careful about details	She was meticulous with the paperwork.
Negligent	Careless; failing to take proper care	Leaving the gate open was negligent.
Obsolete	Out of date; no longer used	That radio model is obsolete.
Persistent	Continuing firmly despite difficulty	A persistent leak kept returning.
Plausible	Reasonable; believable	His excuse sounded plausible.
Preliminary	Coming before the main part	A preliminary check found no faults.
Prudent	Careful and sensible	It is prudent to carry extra water.
Reinforce	To strengthen or support	Reinforce the wall with sandbags.
Retain	To keep	Retain a copy of every form.
Scrutinize	To examine very closely	Scrutinize the contract before signing.
Subsequent	Coming after	Subsequent tests confirmed the result.
Tedious	Boring and repetitive	Counting inventory is tedious.
Terminate	To end	Terminate the exercise at 1600.
Versatile	Able to do many different things	A versatile vehicle handles sand and snow.
Vulnerable	Open to harm or attack	The flank was vulnerable.
Abate	To lessen or die down	The wind abated by morning.
Adept	Highly skilled	She is adept at reading maps.
Affluent	Wealthy	An affluent neighborhood near the base.
Austere	Plain and strict; without comfort	Life in the field is austere.
Benevolent	Kind and generous	A benevolent commander looks after the troops.
Brevity	Shortness; using few words	Radio calls demand brevity.
Clandestine	Secret; hidden	A clandestine meeting at the border.
Conspicuous	Easy to notice; standing out	A white truck is conspicuous in the desert.
Corroborate	To confirm with evidence	The footage corroborated his story.
Diligent	Hardworking and careful	A diligent mechanic checks everything twice.
Eloquent	Fluent and persuasive in speech	The chaplain gave an eloquent talk.
Exacerbate	To make worse	Heat will exacerbate the engine problem.
Fortitude	Courage under hardship	It took fortitude to finish the course.
Frugal	Careful with money; thrifty	A frugal budget got him through the month.
Impede	To slow down or block	Mud impeded the convoy.
Indifferent	Not caring either way	He seemed indifferent to the result.
Innate	Natural; present from birth	She has an innate sense of direction.
Lucid	Clear and easy to understand	The patient was lucid after the medication.
Mitigate	To make less severe	Sandbags mitigate flood damage.
Novice	A beginner	A novice should not solo the climb.
Ominous	Threatening; suggesting something bad	Ominous clouds gathered over the range.
Pragmatic	Practical; focused on results	A pragmatic fix beats a perfect plan.
Precarious	Unstable; risky	The ladder was in a precarious spot.
Prolific	Producing a lot	A prolific writer of training manuals.
Reconcile	To bring into agreement; to settle	Reconcile the two inventory counts.
Resilient	Able to recover quickly	Resilient troops bounce back from setbacks.
Rudimentary	Basic; undeveloped	He had only rudimentary Spanish.
Stagnant	Not moving or changing	Stagnant water breeds mosquitoes.
Succinct	Brief and clear	Give a succinct summary.
Tenacious	Holding on firmly; determined	A tenacious defender of the position.
Transparent	Easy to see through; open and honest	The process should be transparent.
Volatile	Likely to change suddenly; explosive	Fuel vapors are volatile.
Ambush	A surprise attack from a hidden position	The patrol avoided the ambush.
Calibrate	To adjust an instrument for accuracy	Calibrate the scale before weighing.
Combustion	The process of burning	Combustion drives the pistons.
Corrode	To wear away slowly, as by rust	Salt air will corrode the hull.
Deploy	To move into position for action	The unit will deploy next month.
Fabricate	To build or make; to make up	The shop can fabricate the bracket.
Friction	Resistance when surfaces rub together	Oil reduces friction in the engine.
Insulate	To cover so heat or electricity can't pass	Insulate the wire before use.
Logistics	The planning and moving of supplies	Logistics kept the unit fed and fueled.
Momentum	The force of a moving object	The truck's momentum carried it uphill.
Perimeter	The outer boundary of an area	Guards walked the perimeter.
Reconnaissance	Scouting to gather information	A reconnaissance team mapped the valley.
Surveillance	Close watch over a person or place	Cameras provide surveillance of the gate.
Terrain	The shape and features of the land	Rocky terrain slowed the march.
Velocity	Speed in a given direction	The round left the barrel at high velocity.
anti-	against	antiwar, antifreeze
pre-	before	prevent, prepare
re-	again	return, rebuild
sub-	under	submarine, subordinate
un-	not	unable, unclear
aud	hear	audio, audible
dict	say, speak	dictate, predict
port	carry	transport, import
vid/vis	see	video, visible