(1):
(v. i.) A secret and illicit love affair between two persons of different sexes; an amour; a liaison.
(2):
(v. i.) The plot or romance; a complicated scheme of designs, actions, and events.
(3):
(v. i.) To carry on a secret and illicit love or amour.
(4):
(v. i.) Intricacy; complication.
(5):
(v. i.) A complicated plot or scheme intended to effect some purpose by secret artifice; conspiracy; stratagem.
(6):
(v. t.) To fill with artifice and duplicity; to complicate; to embarrass.
(7):
(v. i.) To form a plot or scheme; to contrive to accomplish a purpose by secret artifice.