Synonyms for Falter:

n.

temporize, sit on, play for time, put off, procrastinate, hold off, wait around. flash, crumple, furrow, crease, gleam, move, reel, express, creep, clear, cross, teeter, lurch. hold your tongue, dry up, bite your tongue/lip, clam up, turn over to, fall silent, keep your mouth shut, hush, shut up. not be getting/going anywhere, lag, tread water, fall behind, be getting/going nowhere fast, be no further forward, be/get bogged down, stall, lose out. act (noun)
waver, faltering, hesitation.
falter (noun)
hesitation, stumble, waver, stammer, faltering, bumble, stutter.

v.

fail (verb)
bust, flounder, fall, blunder, flop, stumble, fail, collapse, flunk, lose.
flinch (verb)
cower, wince, flinch, blink.
hesitate (verb)
halt, wait, shrink, recoil, delay, balk, pause, hesitate.
motion (verb)
waver.
stative (verb)
waver.
stumble (verb)
limp, totter, stagger, hobble.
stumble, stutter (verb)
wobble, stammer, hesitate, flounder, teeter, waver, totter, halt, stagger, reel, lurch.

Other synonyms:

turn over to, toddle, lose out. dry up, hush, reel, crumple, Shilly-shally, teeter. fall behind, wobble, lurch, creep. gleam, shut up. crease, furrow. express. stall. cross. flash. clear. hesitate
hold off.
lurch
lurch.
quail
wince.
stumble
stumble.
stutter
stutter.

Usage examples for falter

  1. Why, then, do I falter – A Maid at King Alfred’s Court by Lucy Foster Madison
  2. After to- night I shall never falter in that confidence. – By Wit of Woman by Arthur W. Marchmont
  3. Then, though my feet should falter While I thy beams can see, Though I be lone and weary, Lead on, I'll follow thee. – Our Unitarian Gospel by Minot Savage