N. warning, early warning, caution, caveat, notice, premonition, premonishment, prediction, contraindication, lesson, dehortation, admonition, monition, alarm, handwriting on the wall, mene mene tekel upharsin, red flag, yellow flag, fog-signal, foghorn, siren, monitor, warning voice, cassandra, signs of the times, mother cary's chickens, stormy petrel, bird of ill omen, gathering clouds, clouds in the horizon, death watch, watchtower, beacon, signal post, lighthouse, sentinel, sentry, watch, watchman, watch and ward, watchdog, bandog, housedog, patrol, patrolman, vedette, picket, bivouac, scout, spy, spial|, undercover agent, mole, plainclothesman, advanced guard, rear guard, lookout, cautiousness, monitor, guard camera, radar, awacs, spy satellite, spy-in-the-sky, u2 plane, spy plane

V. warn, caution, forewarn, prewarn, admonish, premonish, give notice, give warning, dehort, menace, put on one's guard, sound the alarm, croak, beware, ware, take warning, take heed at one's peril, keep watch and ward

Adj. warning, premonitory, monitory, cautionary, admonitory, admonitive, sematic, warned, forewarned, on one's guard, (cautious) 864

Adv. in terrorem

Int. beware, ware, take care, look out, fore, [golf], mind what you are about, take care what you are about, mind, phr, ne reveillez pas le chat qui dort, foenum habet in cornu, caveat actor, le silence du people est la legon des rois, verbum sat sapienti, un averti en vaut deux