noun, verb, duped, dup⋅ing.| 1. | a person who is easily deceived or fooled; gull. |
| 2. | a person who unquestioningly or unwittingly serves a cause or another person: a dupe of the opponents. |
| 3. | to make a dupe of; deceive; delude; trick. |

noun, verb, duped, dup⋅ing, adjective Informal.| 1. | duplicate. |
| 2. | Movies.
|
| 3. | Television. a duplicate videotape obtained by electronic printing of the original videotape. |
| 4. | to duplicate. |
| 5. | duplicate. |

dupe (dōōp, dyōōp) n.
To deceive (an unwary person). See Synonyms at deceive. [French, from Old French, probably alteration of huppe, hoopoe (from the bird's stupid appearance); see hoopoe.] dup'a·bil'i·ty n., dup'a·ble adj., dup'er n. |
dupe
|