JMdict: 1487430

必携 【ひっけい】

  1. [adj-no,n-suf] indispensable; essential; must-have
  2. [n] handbook; manual; vade mecum
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Invariably, Certain, Inevitable ヒツ かなら.ず
Portable, Carry (in Hand), Armed With, Bring Along ケイ たずさ.える, たずさ.わる