adjective

1. Archaic free in giving; generous
2. open and honest in expressing what one thinks or feels; straightforward; candid
3. free from reserve, disguise, or guile; clearly evident; plain showing frank distaste

Etymology: ME < OFr franc, free, frank < ML francus < LL Francus, a Frank, hence free man (i.e., member of the ruling race in Gaul) < Gmc *Frank (> OHG Franco) < ? or akin to *franco, a spear, javelin > OE franca, ON frakka

transitive verb

1. 1. to send (mail) free of postage, as by virtue of an official position
   2. to mark (mail) as with one's signature so that it can be sent free
   3. to put a stamp on or meter (mail) to prepay postage
2. to make easy the passage of (a person); allow to pass freely

noun

1. the privilege of sending mail free
2. a mark, signature, or stamp on mail for, or in place of, postage
3. an envelope, etc. that has been franked