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

Class II. Words Relating to Space
Section IV. Motion
2. Degrees of Motion

275. Slowness.

   NOUN:SLOWNESS &c. adj.; languor (inactivity) [See Inactivity]; drawl; creeping &c. v., lentor [rare].
  jog-trot, dog-trot; amble, rack, pace, single-foot, walk; mincing steps; dead march, slow march, slow time.
  RETARDATION; slackening &c. v.; delay (lateness) [See Lateness]; claudication [obs.].
  SLOW GOER, slow coach [colloq.]; lingerer, loiterer, sluggard, tortoise, snail; poke [slang, U. S.]; dawdle (inactive) [See Inactivity].
   VERB:MOVE SLOWLY &c. adv.; creep, crawl, lag, slug [dial.], walk, drawl, linger, loiter, saunter; plod, trudge, stump along, lumber; trail, drag; dawdle &c. (be inactive) [See Inactivity]; grovel, worm one’s way, inch, inch along, steal along; jog on, rub on, toddle, waddle, wabble or wobble, wamble, traipse or trapes [dial. or colloq.], slouch, shuffle, halt, hobble, limp, claudicate [obs.], shamble; flag, falter, totter, stagger; mince, step short; march in slow time, march in funeral procession; take one’s time; hang fire &c. (be late) [See Lateness].
  RETARD, relax, slacken, check, moderate, rein in, curb; reef; strike -, shorten -, take in- sail; put on the drag, brake, apply the brake; clip the wings; reduce the speed; slacken speed, slacken one’s pace, backwater, back pedal, throttle down, lose ground.
   ADJECTIVE:SLOW, slack; tardy; dilatory (inactive) [See Inactivity]; gentle, easy; leisurely; deliberate, gradual; insensible, imperceptible; languid, sluggish, apathetic, phlegmatic, lymphatic; moderate, slow-paced, tardigrade [rare], snail-like; creeping &c. v.; reptatorial or reptatory.
  DULL, slow [colloq.], prosaic, unentertaining, boresome, wearisome, uninteresting (dull) [See Dullness].
   ADVERB:SLOWLY &c. adj.; leisurely; piano [It.], adagio [It.], largo [It.], larghetto [It.], at half speed, under easy sail; at a -foot’s, – snail’s, – funeral- pace; dead slow [colloq.]; slower than- death, – cold molasses [colloq.], – a funeral; in slow time; with mincing steps, with clipped wings; haud passibus œquis [Vergil]; in low (gear or speed) [automobiling].
  GRADUALLY &c. adj.; gradatim; by degrees, by slow degrees, by inches, by little and little; step by step; inch by inch, bit by bit, little by little, seriatim [L.], consecutively.
  1. Dum Roma deliberat Saguntum perit.
  2. That, like a wounded snake, drags its slow length along.—Pope