frequentative(n = noun.communication) - a verb form that serves to express frequent repetition of an action;
is a kind of verb
Serving to express the frequent repetition of an action; as, a frequentative verb. [1913 Webster]
frequentative, adj. & n. Gram.
--adj. expressing frequent repetition or intensity of action.
--n. a verb or verbal form or conjugation expressing this (e.g. chatter, twinkle).
Etymology:
F fr{eacute}quentatif -ive or L frequentativus (as FREQUENT)