otiose Antonyms

useful on the pig's back vivacious valuable tireless successful studious sedulous productive practical potent persevering worthwhile zealous financially manageable workaholic performant lean and mean overactive hardworking hard-working unflagging meaningful activated untiring painstaking necessary effectual effective driven diligent conscientious concerned careful caring busy attentive assiduous efficacious efficient lively keen judicious interested industrious indefatigable fruitful fresh essential enthusiastic