To which salt has not been added. / (cryptography) Without a cryptographic salt.

(philosophy) Not capable of being said. / (rare) Not allowed or not fit to be said.

Not scripted; without a script. / (by extension) Unplanned, unexpected, spontaneous.

Not shaken.

past participle of unshake

Not shorn.

Not skillful.

(British spelling) Alternative spelling of unsavory

Not in accordance with the season.

Not scientific