right now, just now, immediately

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

unnecessary

needlessness

necessary evil

sagacious / genius / excellence

outstanding

(rare) a female bear; a she-bear.

excellent / splendid / swift

a person with lithe movements / kind (adj.), favor / good, excellent, surpass, superior / the best possible grade on school results / rich, wealthy / a sufficient amount for a certain thing