Frank (frăṉk), a. [Compar.Franker (–ẽr); superl.Frankest.] [F. franc free, frank, L. Francus a Frank, fr. OHG. Franko the name of a Germanic people on the Rhine, who afterward founded the French monarchy; cf. AS. franca javelin, Icel. frakka. Cf. Franc, French, a., Franchise, n.] 1. Unbounded by restrictions, limitations, etc.; free. “It is of frank gift.” Spenser.
2. Free in uttering one's real sentiments; not reserved; using no disguise; candid; ingenuous; as, a frank nature, conversation, manner, etc.
3. Liberal; generous; profuse.
Frank of civilities that cost them nothing. L'Estrange.
4. Unrestrained; loose; licentious; — used in a bad sense. Spenser.
Syn. — Ingenuous; candid; artless; plain; open; unreserved; undisguised; sincere. See Candid, Ingenuous.