frank a. [Compar. franker superl. frankest.]
1. Unbounded by restrictions, limitations, etc.; free. [R.] “It is of frank gift.”
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. [Obs.]
Frank of civilities that cost them nothing. --L'Estrange.
4. Unrestrained; loose; licentious; -- used in a bad sense.
Syn: -- Ingenuous; candid; artless; plain; open; unreserved; undisguised; sincere. See Candid, Ingenuous.