within; inside of; less than
to act as an intermediary; to step in; to come between; to intervene; to interject
very interesting; of great interest
easy; simple; ready; casual; off-hand; easy-going
to keep someone from doing; to stop; to prevent; to check; to hinder; to obstruct
attenuation; damping; decay
grinding of the teeth; involuntary nocturnal tooth grinding; bruxism; grinding one's teeth out of anger or vexation; gnashing one's teeth; gritting one's teeth
centre of gravity (center); centroid; barycenter; (one's) balance
bad move (in chess, shogi, etc.); poor decision; bad move
end; verge; extremity; miss; failure; blank (e.g. lottery ticket)
replacement; substitution; change; shunting (rail); switching
changing (job, career, lifestyle, social position, beliefs, etc.)
undercranking; fast motion
spicy; hot; salty; harsh (criticism); severe (punishment); painful
to scream; to whine; to grumble; to complain
to connect; to tie; to fasten; to transfer (phone call)
lowness (of degree, value, etc.); inferiority; second volume (of two); third volume (of three)
to draw an arc (e.g. with a compass); to describe an arc (e.g. through the air); to form an arc
counterattack; slashing back; railway switchback; twisting backward knee trip
yes?; no?; isn't it?; is it?
fall; decline; lowering; deterioration; degradation
ability; performance; efficiency
moat; fosse; canal; ditch
to save up; to stockpile; to stash away; to hoard; to amass; to salt away
reconstruction; rebuilding; restructuring
single; solo; solitary; just one; only one
name; designation; denomination; naming; giving a name
reappearance; reemergence; return; reproduction; reenactment; recreation
having presence of mind; self-possessed; imperturbable; calm and self-possessed
defeating; crushing; smashing; destroying
year; age; years; past one's prime; old age
incomplete; unfinished; imperfect
end; extremity; limit; result; outcome; upshot
touchstone (assaying tool); touchstone (e.g. of success); test; litmus test
should do; ought to do; must do
tens of thousands of years
conflict; fighting each other
race; tribe; species; genus; stellar population (i.e. population I, II and III)
private person; individual