"characterized by continuity, not affected by disconnection or interruption," 1640s, from French continueus or directly from Latin continuus "joining, connecting with something; following one after another," from continere (intransitive) "to be uninterrupted," literally "to hang together" (see contain). Related: Continuously; continuousness.
"chew deliberately or continuously," early 15c. variant of mocchen (late 14c.), imitative (with -n- perhaps by influence of crunch), or perhaps from or influenced by Old French mangier "to eat, bite," from Latin manducare "to chew." Related: Munched; munching.
1630s, "to compete with" (obsolete); 1742, "act in opposition to, struggle against continuously," from Greek antagonizesthai "to struggle against, oppose, be a rival," from anti "against" (see anti-) + agonizesthai "to contend for a prize," from agon "a struggle, a contest" (see agony). The meaning "make antagonistic" is by 1882. Related: Antagonized; antagonizing; antagonization.
late Old English anon "straightway, forthwith," earlier on an, literally "into one," thus "continuously; straightway (in one course), at once;" see one. As a reply, "at once, coming!" By gradual misuse, "soon, in a little while" (1520s). An etymological one-word lesson in procrastination.
late 14c., "expression of (popular) discontent or complaint by grumbling," from Old French murmure "murmur, sound of human voices; trouble, argument" (12c.), noun of action from murmurer "to murmur," from Latin murmurare "to murmur, mutter," from murmur (n.) "a hum, muttering, rushing," probably from a PIE reduplicative base *mor-mor, of imitative origin (source also of Sanskrit murmurah "crackling fire," Greek mormyrein "to roar, boil," Lithuanian murmlenti "to murmur").
Meaning "a low sound continuously repeated" (of bees, streams, etc.) is by c. 1400. That of "softly spoken words" is from 1670s. Medical sense of "sound heard in auscultation" is by 1824.