—­ pitfall is related to deceiver and danger —­

     #667. [Source of danger.] Pitfall. —­ N. rocks, reefs, coral reef,
sunken rocks, snags; sands, quicksands; syrt|, syrtis|; Goodwin sands, sandy foundation; slippery ground; breakers, shoals, shallows, bank, shelf, flat, lee shore, ironbound coast; rock ahead, breakers ahead.
     precipice; maelstrom, volcano; ambush &c. 530; pitfall, trapdoor; trap
&c. (snare) 545.
     sword of Damocles; wolf at the door, snake in the grass, death in the
pot; latency &c. 526.
     ugly customer, dangerous person, le chat qui dort[Fr]; firebrand,
hornet’s nest. 
     Phr. latet anquis in herba [Lat][Vergil]; proximus ardet Ucalegon
[Lat][Vergil].

—­ p. 214 —­

     #668.  Warning. —­ N. warning, early warning, caution, caveat; notice
&c. (information) 527; premonition, premonishment[obs3]; prediction &c. 511; contraindication, lesson, dehortation[obs3]; admonition, monition; alarm &c. 669.
     handwriting on the wall, mene mene tekel upharsin, red flag, yellow
flag; fog-signal, foghorn; siren; monitor, warning voice, Cassandra[obs3], signs of the times, Mother Cary’s chickens[obs3], stormy petrel, bird of ill omen, gathering clouds, clouds in the horizon, death watch.
     watchtower, beacon, signal post; lighthouse &c. (indication of
locality) 550. sentinel, sentry; watch, watchman; watch and ward; watchdog, bandog[obs3], housedog[obs3]; patrol, patrolman, vedette[obs3], picket, bivouac, scout, spy, spial|; undercover agent, mole, plainclothesman; advanced guard, rear guard; lookout.
     cautiousness &c. 864.
     monitor, guard camera,
     radar, AWACS, spy satellite, spy-in-the-sky, U2 plane, spy plane. 
     V. warn, caution; forewarn, prewarn[obs3]; admonish, premonish[obs3];
give notice, give warning, dehort[obs3]; menace &c. (threaten) 909; put on one’s guard; sound the alarm &c. 669; croak.
     beware, ware; take warning, take heed at one’s peril; keep watch and
ward &c. (care) 459. 
     Adj. warning &c. v.; premonitory, monitory, cautionary; admonitory,
admonitive[obs3]; sematic[Biol].
     warned, forewarned &c. v.; on one’s guard &c. (careful) 459,
(cautious) 864. 
     Adv. in terrorem[Lat] &c. (threat) 909. 
     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 [French:  don’t wake a sleeping
cat]; foenum habet in cornu[Lat]; caveat actor; le silence du people est la legon des rois[Fr]; verbum sat sapienti [Latin:  a word to the wise is sufficient]; un averti en vaut deux[Fr].