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

Class I. Words Expressing Abstract Relations
Section I. Existence
4. Modal Existence

8. Circumstance.

   NOUN:CIRCUMSTANCE, situation, phase, position, posture, attitude, place, point; terms; régime [F.]; footing, standing, status.
  OCCASION, juncture, conjuncture; contingency (event) [See Eventuality].
  PREDICAMENT; emergency; exigency, crisis, pinch, pass, plight, push; occurrence; turning point.
  BEARINGS, how the land lies.
   ADJECTIVE:CIRCUMSTANTIAL; given, conditional, provisional; critical; modal; contingent, incidental; adventitious (extrinsic) [See Extrinsicality]; limitative.
  DETAILED, minute, full, fussy.
   ADVERB:THUS, in such wise; in or under the circumstances &c. n.; in or under the conditions [See State].
  ACCORDINGLY; that being the case; such being the case; that being so; sith [obs. or archaic], sithen [obs.], since, seeing that.
  as matters stand; as things go, as times go.
  CONDITIONALLY, provided, if, in case; if so, if so be, if it be so; if it so happen, if it so turn out; in the event of; in such a contingency, in such a case, in such an event; provisionally, unless, without.
  according to circumstances, according to the occasion; as it may happen, as it may turn out, as it may be; as the case may be, as the wind blows; pro re natâ [L.].
  1. Yet are my sins not those of circumstance.—Lytton
  2. The happy combination of fortuitous circumstances.—Scott
  3. Fearful concatenation of circumstance.—Daniel Webster
  4. Circumstances alter cases.—Haliburton