Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class V. Words Releasing to the Voluntary Powers
Division (I) Individual Volition
Section II. Prospective Volition
3. Contingent Subservience

665. Danger.

   NOUN:DANGER, peril, insecurity, jeopardy, risk, hazard, venture, precariousness, slipperiness; instability [See Changeableness]; defenselessness &c. adj.
  exposure (liability) [See Liability]; vulnerability; vulnerable point, heel of Achilles; forlorn hope (hopelessness) [See Hopelessness].
  [DANGEROUS COURSE] leap in the dark (rashness) [See Rashness]; road to ruin, facilis descensus Averni [Vergil], hairbreadth escape.
  [APPROACH OF DANGER] cause for alarm; source of danger [See Pitfall]; rock -, breakers- ahead; storm brewing; clouds -in the horizon, – gathering; warning [See Warning]; alarm [See Alarm].
  [SENSE OF DANGER] apprehension [See Fear].
   VERB:BE IN DANGER &c. adj.; be exposed to -, run into -, incur -, encounter- danger &c. n.; run a risk; lay oneself open to (liability) [See Liability]; lean on -, trust to- a broken reed; feel the ground sliding from under one, have to run for it; have the -chances, – odds- against one.
  hang by a thread, totter; tremble on the verge; totter on the brink; sleep -, stand- on a volcano; sit on a barrel of gunpowder, live in a glass house.
  ENDANGER; bring -, place -, put- in -danger &c. n.; expose to danger, imperil; be proscribed; have one’s name on the danger list; be overdue [naut.], be despaired of; be under sentence of death; jeopard, jeopardize; put one’s head in the lion’s mouth; beard the lion in his den; compromise; sail too near the wind (rash) [See Rashness].
  [See threaten] danger; run one hard; lay a trap for (deceive) [See Deception].
  ADVENTURE, risk, hazard, venture, stake, set at hazard; run the gauntlet (dare) [See Courage]; engage in a forlorn hope.
   ADJECTIVE:IN DANGER &c. n.; endangered &c. v.; fraught with danger; dangerous, hazardous, perilous, periculous [obs.], parlous [archaic], unsafe, unprotected &c. (safe, protect [See Safety]); insecure, untrustworthy, unreliable; built upon sand, on a sandy basis; unsound, speculative, wild-cat.
  DEFENSELESS, guardless, fenceless [archaic], harborless, unsheltered, unshielded; vulnerable, expugnable, exposed; open to (liable) [See Liability].
  aux abois [F.], at bay, with one’s back to the wall; on the wrong side of the wall, on a lee shore, on the rocks.
  PRECARIOUS, critical, ticklish; slippery, slippy; hanging by a thread &c. v.; with a halter round one’s neck; between -the hammer and the anvil, – Scylla and Charybdis, – two fires; on the edge, brink, or verge of -a precipice, – a volcano, – an abyss, -a pit; in the lion’s den, on slippery ground, under fire; not out of the wood; in the condemned cell, under sentence of death; at stake, in question.
  UNWARNED, unadmonished, unadvised; unprepared [See Nonpreparation]; off one’s guard (inexpectant) [See Inexpectation].
  TOTTERING, unstable, unsteady; shaky, top-heavy, tumble-down, ram-shackle, crumbling, water-logged; helpless, guideless; in a bad way; reduced to -, at- the last extremity; trembling in the balance; nodding to its fall (destruction) [See Destruction].
  THREATENING [See Threat]; ominous, illomened; alarming (fear) [See Fear]; explosive; poisonous; venomous (insalubrious) [See Insalubrity]; rotten at the core.
  ADVENTUROUS (rash) [See Rashness], (bold) [See Courage].
   INTERJECTION:STOP! look! listen! look out! look alive! look slippy! [colloq.]; below there! ’ware heads! beware! take care! prenez garde! [F.].    QUOTATIONS:
  1. Incidit in Scyllam qui vult vitare Charybdim.
  2. Nam tua res agitur paries dum proxinus ardet.
  3. Out of this nettle, danger, we pluck this flower, safety.—King Henry IV
  4. Pleased with the danger, when the waves went high He sought the storms.—Dryden