strict; severe; stringent; rigorous; rigid; firm
hole; opening; pit; hollow; burrow; den; deficit
to drill; to bore; to hit the mark; to get to the heart of (the matter); (arch.) to put on; (arch.) to wear
four corners; four ordinal directions
to find out; to discover; to select; to pick out; to look out (from the inside); to be wide-eyed (in surprise, anger, etc.)
guard; sentinel; garrison
around the clock; day and night
to stuff into; to jam; to shorten; to move closer together; to reduce (spending); to conserve; to focus intently on
education; schooling; training; culture; cultivation; education
to drop; to lose; to clean off (dirt, makeup, paint, etc.); to remove (e.g. stains or facial hair); to lose (a match); to reject (an applicant); to lower (e.g. shoulders or voice)
alone; by oneself; unaccompanied; unaided; single-handed; without one's family
main body (of troops); main force; this troop; these troops
going ahead; going first; preceding; coming before; scoring first; getting off to a lead
sabotage; subversive activities
to start; to begin; to challenge; to pick (a fight); to set (traps); to plant (explosives)
to invade; to attack; to breach; to penetrate
preparations; preliminary arrangements; spade work; mise en place; groundwork
area of expertise; (one's) field; (one's) line
choosing a site (e.g. for industry); deciding on a location; standpoint; position
inner structure; internal anatomy
guess; conjecture; surmise
to make; to produce; to prepare (food); to brew (alcohol); to raise; to grow; to till
reverse; opposite; converse (of a hypothesis, etc.); inverse (function)
place; spot; address; district; area; one's house; point
to finish; to get through with; to graduate; to come to an end; to end; to finish doing ...
to take an aggressive position; to stir up trouble
to be hesitant; to feel timid
at one's feet; underfoot; gait; pace; most recent; current
to rise; to go up; to enter (esp. from outdoors); to come in; to enter (a school); to advance to the next grade; to get out (of water)
under (guidance, supervision, rules, the law, etc.); under (a flag, the sun, etc.); beneath; with (e.g. one blow); on (the promise, condition, assumption, etc. that ...); (someone's) side
to throw; to hurl; to give up; to abandon; to cast (a glance, shadow, doubt, etc.)
lightly; nimbly; with agility; casually; readily; regularly
to be sorry; to beg someone's pardon; to be much obliged; to be grateful; to be amazed; to be greatly impressed
to move along; to go alongside; to walk along; to follow; to run down (one's cheek, leg, etc.); to trickle down
to ascend; to go up; to climb
obviously; as we all know; needless to say; of course; it goes without saying
being completely naked; (in) one's birthday suit
nudity; stark naked; in one's bare skin; penniless
1,000,000; one million; million; many
military forces; army; troops; number of soldiers
sure; no mistaking it; for certain; without doubt
condition; assumption; intention; intent; premise