enmity; antagonism; hostility; feuding (with); being at odds (with)
revolving lantern; ever-changing scene (e.g. life flashing before one's eyes)
superior; superiors; senior
to press forward; to forge ahead; to push on
mechanism; machinery; trick; dodge; mechanical doll; string puppet
going upstream; sailing against the current
to slip into; to crawl into (under); to conceal oneself (under); to sneak into; to infiltrate
armchair theory; impracticable plan; unworkable idea
(being in) the red; deficit; red letter; red writing; corrections (by a teacher or proofreader) written in red
to begin to crumble; to crumble and fall (or collapse) onto another object
sound; noise; audio; acoustics; reverberation
significant; meaningful; intentional; volitional
to go to meet (someone); to go to pick up
putting that aside; that said; apart from that; anyway; be that as it may
to buy again; to buy anew
detachment; coming off; peeling off; (flow) separation
becoming red-hot; red heat; scorching heat; burning (love); passionate (e.g. debate); ardent
to purify; to cleanse; to exorcise; to purge; to ward off
to chip (off); to shave off; to sharpen; to dampen (one's enthusiasm, interest, etc.); to reduce
directivity; directionality; intentionality
extermination (of pests); eradication; stamping out (e.g. a social evil)
mimicry; mimesis; camouflage
recall (esp. of an envoy or an ambassador); calling someone back; summons (home)
special someone; special person; precious one; significant other
remains; corpse; (dead) body
inverse; reverse; retro-; contra-
connotation; comprehension; intension; inclusion; containment within
keepsake; memorabilia; memento
reorganization; reorganisation; reshuffle
to travel; to take a trip; to make a journey
to make clear; to clarify; to disclose; to make public
solving a riddle; solving a mystery
to be consistent; to be coherent