Compounds of 必

• 必ず
  (adv) necessarily
  certainly
  without fail
  positively
  invariably
  (P)
• 必携
  (n) (1) handbook
  manual
  vade mecum
  (2) (something) essential to keep on you
  (P)
• 必見
  (n) worth seeing
  a must-see
• 必殺
  (n) certain kill
• 必死
  (adj-na,adj-no) (1) frantic
  desperate
  (2) inevitable death
  (3) brinkmate (inevitable checkmate) (shogi)
  (P)
• 必至
  (adj-na,adj-no) (1) inevitable
  necessary
  foregone
  (n) (2) brinkmate (inevitable checkmate) (shogi)
  (P)
• 必治
  (n) certain cure
• 必需
  (n) necessary
  (P)
• 必修
  (n,adj-no) required (subject)
  (P)
• 必勝
  (n) certain victory
  (P)
• 必須
  (adj-na,n,adj-no) indispensable
  required
  (P)
• 必衰
  (n) bound to decline, decay, or collapse
• 必然
  (n,adj-no) inevitable
  necessary
  (P)
• 必達
  (n) (abbr) certain fulfilment
• 必着
  (n) must arrive
  must be received
  (P)
• 必中
  (n,vs) hitting the target
• 必定
  (adj-na,adv,n) inevitably
  certainly
• 必読
  (n) should be read by all
  (P)
• 必敗
  (n) certain defeat
• 必罰
  (n) inevitability of punishment
• 必滅
  (n,vs) mortality
• 必用
  (adj-na) (1) necessary
  needed
  essential
  indispensable
  (n) (2) necessity
  need
  requirement
• 必要
  (adj-na) (1) necessary
  needed
  essential
  indispensable
  (n) (2) necessity
  need
  requirement
  (P)
• 必ずや
  (adv) certainly
  surely
  definitely
• 必殺技
  (n) (MA) special move, usually one unique to a certain fighter or fighting style
• 必死に
  (adv) frantically
  desperately
  for one's life
  (P)
• 必治薬
  (n) necessity guaranteed to cure
• 必需品
  (n) necessities
  necessary article
  requisite
  essential
  (P)
• 必須格
  (n) (ling) indispensable case
• 必然性
  (n) necessity
  inevitability