extempore; impromptu; improvised; ad-lib; off-the-cuff; instant
infancy; childish; infantile; immature
to end in vain; to be wasted effort
shallow thinking; superficial view; insufficient consideration
scope; valid range; coverage
very small amount; insignificant thing; negligible amount
to be a good match for; to stand a chance against; to be able to compete with; to hold one's own
seal; to seal (e.g. a letter); to affix a seal; to seal up
proxy; agent; substitute; deputy; alternate; representative
restoration; repair; mending
crowding together; clustering together; close formation; swarm
structure; construction; posture (e.g. in martial arts); pose; readiness; determination
to throw a punch at; to swing at; to strike out at; to raise a hand against
perfect vacuum; absolute vacuum
to fly (with great force); to blast (e.g. into the sky); to lack common sense; to be extremely surprised (by)
to take the name of; to call oneself; to pretend; to feign; to purport
phase transition; phase change; phase transformation
to throw violently against; to slam against; to strike; to thrust at someone (e.g. a letter)
transmission; propagation; spread; circulation; diffusion; dissemination
to blow away; to blow off; to dispel; to drive away; to talk big
shadow picture; silhouette; shadowgraph
quick; swift; nimble; quick (understanding, judgement, etc.); alert; prompt
flying; leaping; zero; naught; flying fish (esp. the Japanese flying fish, Cypselurus agoo)
to come down; to go down; to hang; to dangle; to move back; to step back; to deteriorate
to change; to exchange; to convert; to renew; to throw a switch; to replace
crack; crevice; fissure; chap; rift
crossing; intersection; (genetic) crossing over
loading (on board); equipping; equipped (with); built-in
in itself; the thing itself; this itself; for its own sake; per se
transfer; redirection; transmission; forwarding (telephone call, e-mail, etc.)
look; glance; sight; summary; list; table
armament; soldier's equipment
circulation; rotation; cycle; loop