(an) unknown; unknown number; variable; unknown quantity; not yet known
counterattack; reversal technique
tribe; race; group (of people who share a common feature); gang; tribe (taxonomic rank); group (in the periodic table)
to etch into one's mind; to remember well
to meddle (in someone's affairs); to poke one's nose into; to interfere; to make a pass (at someone); to hit on
to be the worst of the worst; (lit.) to deserve to die ten thousand deaths
(preliminary) skirmish; prelude; preliminary encounter; warm-up match (e.g. before a final)
comrade in arms; war buddy; fellow soldier
really; very; extremely; (not) anything; (not) at all; (not) a bit
to hear; to listen (e.g. to music); to ask; to enquire; to hear about; to hear of; to follow (advice, order, etc.)
to come together; to join; to merge; to get married; to become a married couple
to hum (a tune); to sing to oneself; to croon
bridge-building; bridge construction; bridge; bridging (e.g. the gap between theory and practice); cross-linking
tear; tears; lachrymal secretion; sympathy
outrageous; wild (ambition, idea, etc.); crazy; inordinate; extravagant (e.g. claims); audacious
to make a joint vow; to swear together; to pledge
chairman; moderator; toastmaster; master of ceremonies; chairperson; host (of a TV show, etc.)
entrance; entering; admission; admittance
receiving; welcoming; going to meet; final call; call of fate; approach of death
screen; curtain; raster; room divider; partition wall
projection (of a shadow); casting (a reflection); (geometric) projection; reflection (of feelings, experiences, etc.); projection
to take advantage of someone's kindness or patience; to get carried away; to be elated; to get puffed up (with pride); to push one's luck; to get cocky
(being) empty-handed; lapse of manners of paying a visit without taking a gift
one grade; first-class; primary
group; faction; (political) faction; wing; school (of thought, painting, etc.); sect
wigless head; head of natural hair; intelligence; comprehension; smarts
to build up one's strength; to get stronger; to give (someone) strength; to cheer (someone) up; to encourage (someone)
taking a seat; sitting down (in one's seat)
tiger's mouth; pattern of three stones resembling a cat's face; used as a connection
cushion; cushion (to soften the blow); mitigation
cold; chilly; cold (attitude, stare, etc.); frigid; composed; cool
to have an ulterior motive; to have an axe to grind
from now on; in the future; hereafter; ahead of us; down the road