必要, 必用, ひつよう
NA-adjective, 必用 can imply has to be used rather than is just needed
1. necessary, needed, essential, indispensable
2. necessity, need, requirement
歯医者に行く必要はない。
羽蟻, はあり, はねあり
winged ant, flying ant
ません
Suffix, See ない・1, See ます・1, Polite, on -masu stem; negates a non-past tense verb
not