chum

v (-mm-) (phr v) chum up (with sb) (infml 口) become very friendly (with sb) （与某人）成为好友.

chron(o)-, chronic, chronical, chronically, chronicle, chronicler, chronological, chronologically, chronology, chronometer, chrysalis, chrysanthemum, chub, chubbiness, chubby, chuck, chucker-out, chuckle, chuffed, chug, chummily, chumminess, chummy, chump, chunk, chunkily, chunkiness, chunky, church, churchgoer, churchwarden, churchyard, churl, churlish, churlishly, churlishness, churn, chute, chutney, CI,