Synonyms of fluency

2 Syllables
diction, dictions
3 Syllables
readiness, phonation
4 Syllables
facility, eloquence, eloquentness, facundity, facilities, volubleness, easygoingness, mellifluousness, enunciation
5 Syllables
articulacy, expressiveness, volubility, expressivity, informality
6 Syllables
articulateness