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. Precursory Measures

674. Nonpreparation.

   NOUN:NONPREPARATION, unpreparedness; absence of -, want of- preparation; inculture [obs.], inconcoction [obs.], improvidence.
  IMMATURITY, crudity; rawness &c. adj.; abortion; disqualification.
  [ABSENCE OF ART] nature, state of nature; virgin soil, unweeded garden; rough diamond; neglect [See Neglect].
  rough copy (plan) [See Plan]; germ [See Cause]; raw material [See Materials].
  improvisation (impulse) [See Impulse].
   VERB:BE UNPREPARED &c. adj.; want -, lack- preparation; lie fallow; s’embarquer sans biscuits [F.]; live from hand to mouth.
  [RENDER UNPREPARED] dismantle (render useless) [See Inutility]; undress [See Divestment].
  EXTEMPORIZE, improvise; cook up, fix up, vamp.
  SURPRISE, drop in upon [colloq.], pay a surprise visit, drop in [colloq.], give a surprise party, take potluck with; take -, catch- unawares; take by surprise, call informally.
   ADJECTIVE:UNPREPARED &c. (prepare [See Preparation]); without preparation [See Preparation]; incomplete [See Incompleteness]; rudimental, embryonic, abortive; immature, unripe, kutcha or kachcha [Hind.]; callow, unfledged, unhatched, unnurtured, raw, green, crude; coarse; rough, roughcast, roughhewn; in the rough; rough-edged, unhewn, un- formed, unfashioned, unwrought, unlabored, unblown; indigested, undigested; unmellowed, unseasoned, unleavened; uncooked, unboiled, unconcocted; unpolished, uncut, deckle-edged.
  UNTAUGHT, uneducated, untrained, untutored, undrilled, unexercised; unlicked; precocious, premature.
  FALLOW, unsown, untilled, uncultivated.
  NATURAL, in puris naturalibus [L.], in a state of nature; undressed; in dishabille, en déshabillé [F.], in negligee.
  UNFITTED, disqualified, unqualified, ill-digested; unbegun, unready, unarranged, unorganized, unfurnished, unprovided, unequipped, untrimmed; out of -gear, – kilter or kelter [colloq.], – order; dismantled &c. v.
  SHIFTLESS, improvident, unthrifty, thriftless, thoughtless, unguarded; happy-go-lucky; slack, remiss; caught napping (inexpectant) [See Inexpectation]; unpremeditated [See Impulse].
   ADVERB:INADVERTENTLY, by surprise, without premeditation; extempore [See Impulse].