N4 - 必ずかならず
certainly, necessarily
N3 - 必ずしもかならずしも
(not) always, (not) necessarily, (not) all, (not) entirely
N3 - 必死ひっし
inevitable death, desperation, frantic, inevitable result
N2 - 必需品ひつじゅひん
necessities, necessary article, requisite, essential
N1 - 必修ひっしゅう
required (subject)
N1 - 必然ひつぜん
inevitable, necessary