once in a lifetime; the first and last occurrence (event, experience) of one's lifetime
progress; being under way
audience; spectator; spectators
discord; breaking up (e.g. friendship)
to return a favor (favour); to repay
complete ignorance (usu. in reference to feigning); lack of knowledge
along (wall, coast, river, etc.); alongside; following
being absorbed in; losing oneself in; losing control of oneself
(act of) encouragement; stimulus; incentive
propulsive power; driving force
novice; beginner; starting to run; running off; running away
railway crossing; railroad crossing; starting line; scratch; determination; stepping over the edge of the ring
slow motion (video); moving slowly; moving leisurely
head over heels; headlong; head first
fall; drop; descent; coming down
to roll over; to tumble; to roll about (with laughter)
to writhe (in pain); to be in agony; to be anguished; to be agonized; to be troubled
unattractive; ugly; unstylish; uncool
stance with legs in an L-shape, with one leg bent in front and other extended behind (martial arts, traditional theater)
isolation; cut off; blockade; quarantine; interception; deprivation
trick that may deceive a child; transparent ploy; mere child's play; kid stuff; puerile trick
to play a trick on; to cheat; to deceive; to dupe
product; produce; result; fruit
of good character; kindhearted; good-natured
leg strength; walking ability; running ability
subject; theme; homework; assignment; task; challenge
device; equipment; machinery; apparatus
simultaneously; all at once; in unison
untalkative; quiet; taciturn; reticent; uncommunicative
bridge building; mediation; go-between; intermediary; (through the) good offices (of someone)
life or death struggle; mortal combat; struggle to the death