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

Class IV. Words Relating to the Intellectual Faculties
Division (II) Communication of Ideas
Section II. Modes of Communication

526. Latency.

   NOUN:LATENCY, inexpression; hidden -, occult- meaning; obscurity (unintelligibility) [See Unintelligibility]; occultness, mystery, cabala or cabbala, cabalism, occultism, mysticism, symbolism, anagoge; silence (taciturnity) [See Taciturnity]; concealment [See Concealment]; more than meets the -eye, – ear; Delphic oracle; le dessous des cartes [F.], undercurrent; “something rotten in the state of Denmark” [Hamlet].
  snake in the grass (pitfall) [See Pitfall]; secret [See Secret].
  darkness, invisibility, imperceptibility.
  ALLUSION, insinuation, inference, implication; innuendo [See Information]; adumbration.
  LATENT INFLUENCE, invisible government, power behind the throne, friend at court, wire-puller [colloq.], king-maker; “a destiny that shapes our ends” [Hamlet].
   VERB:BE LATENT &c. adj.; lurk, smolder or smoulder, underlie, make no sign; escape -observation, – detection, – recognition; lie hid [See Concealment].
  laugh in one’s sleeve; keep back (conceal) [See Concealment].
  INVOLVE, imply, implicate, connote, import, understand, allude to, infer, leave an inference; mysticize [rare], symbolize; whisper (conceal) [See Concealment].
   ADJECTIVE:LATENT; lurking &c. v.; secret, occult, anagogic or anagogical, cabalistic or cabalistical, symbolic, esoteric, recondite, veiled, symbolic, cryptic or cryptical; mystic, mystical; implied &c. v.; dormant; abeyant.
  unapparent, unknown, unseen [See Vision]; in the background; invisible [See Invisibility]; indiscoverable, dark; impenetrable (unintelligible) [See Unintelligibility]; unspied, unsuspected.
  undeveloped, unsolved, unexplained, untraced, undiscovered [See Judgment]untracked, unexplored, uninvented.
  UNEXPRESSED, unmentioned, unpronounced, unsaid, unwritten, unpublished, unbreathed, untalked of, untold [See Information], unsung, unexposed, unproclaimed, undisclosed [See Disclosure], not expressed, tacit.
  INDIRECT, crooked, inferential; by inference, by implication; implicit; constructive; allusive, covert, muffled; steganographic; understood, underhand, underground; concealed; under cover [See Concealment]; delitescent.
   ADVERB:SECRETLY [See Concealment]; by a side wind; sub silentio [L.]; in the background; behind the scenes, behind one’s back; on the tip of one’s tongue; between the lines; by a mutual understanding; sub rosa [L.]; below the surface.
  1. Thereby hangs a tale.—As You Like It
  2. Tacitum vivit sub pectore vulnus.—Vergil