1. A seal. Lettre de cachet, in France, before the Revolution, a royal warrant for the imprisonment of a person.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• catchey,
• caght,
• cahed,
• cach,
• cachup,
• cachier,
• tacht,
• rachett,
• teachet,
• cchek,
• cashel,
• chached,
• cchest,
• cachter,
• hachet,
• caucht,
• cauhgt,
• chacht,
• coache,
• hachete

• caste,
• catcher,
• cash out,
• casto,
• cast,
• casket,
• Coached,
• caicedo,
• casquet,
• crochet,
• Cacciotti,
• cashed,
• cascade,
• cassette.

The adjective form of the word "cachet" is "cachetted".

The plural of the "cachet" can be the "cachets".

The singular of the "cachet" can be the "cachet".