I. noun
Synonyms: particle , atom, bit, fragment, grain, iota, jot, modicum, scrap, shred
II. noun
Synonyms: qualm , compunction, conscience, demur, squeam
Related Word: faltering, hesitancy, hesitation, pause; reconsideration, second thought
III. verb
Synonyms: demur , balk, boggle, gag, jib, shy, stick, stickle, strain, stumble
Related Word: question; fret, worry