DUPE
Dupe, v. t. [imp. & p. p. Duped; p. pr. & vb. n. Duping.] Etym: [Cf.
F. duper, fr. dupe. See Dupe, n.]
Defn: To deceive; to trick; to mislead by imposing on one's credulity; to gull; as, dupe one by flattery. Ne'er have I duped him with base counterfeits. Coleridge.
DUPER
Dup"er, n.
Defn: One who dupes another.
DUPERY
Dup"er*y, n. Etym: [F. duperie, fr. duper.]
Defn: The act or practice of duping. [R.]
DUPION Du"pi*on, n. Etym: [F. doupion, It. doppione, fr. doppio double, L. duplus. See Double, and cf. Doubloon.]
Defn: A double cocoon, made by two silkworms.
DUPLE
Du"ple, a. Etym: [L. duplus. See Double.]
Defn: Double. Duple ratio (Math.), that in which the antecedent term is double the consequent, as of 2 to 1, 8 to 4, etc.