FRANK, adjective 1. Open; ingenuous; candid; free in uttering real sentiments; not reserved; using no disguise. Young persons are usually frank; old persons are more reserved. 2. Open; ingenuous; as a frank disposition or heart. 3. Liberal; generous; not niggardly. [This sense is now rare.] 4. Free; without conditions or compensation; as a frank gift. 5. Licentious; unrestrained. [Not used.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI