Falter

Noun

 * 1) unsteadiness.

Verb

 * 1) To waver or be unsteady.
 * 2) To stammer.
 * 3) To stumble.

Adverbs for Falter
technically; abruptly; quaveringly; meekly; habitually; agedly; feebly; unattractively; repeatedly; recurrently; absurdly; ridiculously.

Synonyms for Falter
hesitate, doubt, stutter, stammer, waver, demur, weaken, flinch, shrink, vacillate, totter, hobble, slip, fluctuate, stagger, delay, pause, scruple, tremble, reel.

Antonyms for Falter
continue, persist, demand, insist, pursue, stay, endure, remain, maintain, contend, drone, chatter, urge, press, incite, impel, stimulate, instigate, compel, encourage.

Thesaurus
Bebung, abandon hope, back down, back out, balance, bashfulness, blench, blunder, bob, bobble, boggle, boggling, bounce, bump, careen, career, caution, cautiousness, chatter, chicken, chicken out, compunction, dally, dawdle, debate, delay, deliberate, demur, demurral, desert under fire, despair, despair of, despond, didder, diffidence, dillydally, dither, drag, faltering, fear, fight shy of, flag, flinch, flounce, flounder, flutter, funk, funk out, get cold feet, give up, give up hope, give way, goof off, grimace, halt, hang back, hang in doubt, hang off, have an ague, have qualms, haw, hem, hem and haw, hesitance, hesitancy, hesitate, hesitating, hesitation, hold off, hover, hum, hum and haw, hustle, jactitate, jar, jerk, jib, jig, jigget, jiggle, jog, joggle, jolt, jostle, jounce, jump, labor, lag, linger, loiter, lollygag, lose courage, lose heart, lose hope, lurch, make bones about, mammer, modesty, objection, pause, pitch, pitch and plunge, plunge, ponder, protest, pull back, quail, quake, qualm, qualm of conscience, qualmishness, quaver, quiver, recoil, reel, retreat, rictus, rock, roll, scruple, scrupulosity, scrupulousness, scuttle, seethe, shake, shilly-shally, shilly-shallying, shiver, shock, shrink, shrinking, shudder, shy, shy at, shyness, sink into despair, skedaddle, stagger, stammer, stick at, stickle, stickling, stop to consider, straddle the fence, strain, strain at, struggle, stumble, stutter, sway, swing, tarry, tentativeness, think twice, think twice about, thrash about, tic, topple, toss, toss and tumble, toss and turn, totter, trail, tremble, tremolando, tremolant, tremolo, tremor, trill, trillet, trilleto, trillo, tumble, twitch, twitter, vacillate, vibrate, vibrato, volutation, wallop, wallow, waste time, waver, welter, whine, wince, withdraw, wobble, yield, yield to despair

Etymology
falteren "to stagger", probably from a Scandinavian source (compare faltrast:, be encumbered) or from a  frequentative of falden, folden "to fold". More at fold.

Verb

 * Russian: заикаться, запинаться


 * Italian:


 * Russian: оступаться, спотыкаться