tittle

ace, dab, dash, driblet, drop, fraction, iota, jot, lick, minim, mite, modicum, nutshell, ounce, pinch, shred, smatter, smidgen (also smidgeon), spot, strain, streak, suspicion, taste, touch, trace, whisper, whit

bite, mouthful, nibble, tidbit (also titbit)

fragment, part, portion, section

chip, flake, shard, shiver, sliver, splinter

clipping, paring, shaving

smithereens

ace, bit, crumb, dab, driblet, glimmer, hint, little, mite, nip, ounce, particle, peanuts, pin, ray, scrap, scruple, semblance, shade, shadow, shred, smidgen (also smidgeon), speck, spot, sprinkling, strain, streak, suspicion, touch, trace