noun, verb, guised, guis⋅ing.| 1. | general external appearance; aspect; semblance: an old principle in a new guise. |
| 2. | assumed appearance or mere semblance: under the guise of friendship. |
| 3. | style of dress: in the guise of a shepherd. |
| 4. | Archaic. manner; mode. |
| 5. | to dress; attire: children guised as cowboys. |
| 6. | Scot. and North England. to appear or go in disguise. |
| Guise, Third Duke. Title of Henri de Lorraine. 1550-1588. French military leader who helped plan the massacre of Huguenots on Saint Bartholomew's Day, 1572. His designs on the throne led to his assassination by order of Henry III. |