aperiodic Antonyms

periodic hebdomadary periodical seedling self-assertive self-seeking self-willed semimonthly semiweekly tertian oscillatory oscillating hourly immovable impelled impulsive menstrual militant monomaniacal monthly nightly triennial undulatory obsessive midweekly 24-7 bi-annual semestral semestrial unabated unbendable well-established biannually semiannual unremitting vying warring warlike yearly undeviating dead set biannual biyearly bent upon hebdomadal active avid bent besetting biennial