bravery; courage; heroism
black box; flight recorder; black box (system or device with hidden internal workings)
substitution; replacement; permutation; substitution; displacement
to perceive; to understand
after all is said and done; no matter what people say; in the end; definitely; undeniably
(in spite of) being old enough to know better
spirit of the dead (esp. of those killed in war); soul of a fallen soldier; person of outstanding talent; gifted person; genius
to fiddle with; to monkey around with
eternal; everlasting; perpetual; immemorial
annihilation (of particle and anti-particle)
various foods cooked together; hodgepodge; hotchpotch; mulligan stew
leadership competition; power struggle
coming to a head; coming to the surface; becoming an issue; breaking
individual; distinctive; unique; characteristic; personal; idiosyncratic
one grain; one drop; one bead
bribe; sweetener; douceur
meaningless or stupid turn of phrase that at first glance resembles a wise saying; silly saying; nonsensical proverb
when push comes to shove; when needed; when necessity arises; when the moment arrives
record keeper; recorder; archivist
rock-paper-scissors (game); janken
to be postponed; to be deferred; to be delayed
interview; audience; meeting; (viewing) party
acting as agent; acting on (someone's) behalf; executing business for
blood relationship; consanguinity; blood relative
Idu (archaic writing system that uses Chinese characters to represent the Korean language)
astounding; startling; world-shaking; amazing; earth-shattering
as you see; as you can see
slimming down; scaling back; thinning; streamlining; retrenchment
high and low (social standing)
circle and cross; right and wrong (answers); true-false
entropy; entropy (information theory)
pinch-hitting; pinch hitter; performing a duty in place of someone else; proxy
butterfly net; net for catching insects