JMdict: 1487540

必須 【ひっす】

  1. [adj-no,adj-na,n] indispensable; essential; requisite; required; compulsory; necessary
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Invariably, Certain, Inevitable ヒツ かなら.ず
Ought, By All Means, Necessarily ス, シュ すべから.く, すべし, ひげ, まつ, もち.いる, もと.める

Words often seen with this one: (experimental feature)

アイテム (24), こと (18),  (14), この (12), という (11), ため (10)