Compounds of 堅

• 堅魚木
  (n) log on the roof of a shrine set perpendicular to the ridgepole
• 堅焼き
  (adj-no) hard-baked
  hard
• 堅信礼
  (n) (the Christian sacrament of) confirmation
• 堅太り
  (adj-na,n) solidly built person
• 堅頭竜
  (n) pachycephalosaur (any dinosaur of infraorder Pachycephalosauria)
• 口堅い
  (adj-i) discreet
  tight-lipped
• 手堅い
  (adj-i) steady
  firm
  solid
  secure
  (P)
• 中堅手
  (n) center fielder
  centre fielder
• 底堅い
  (adj-i) stable (market) after having bottomed out
• 物堅い
  (adj-i) honest
  upright
  faithful
  reliable
• 米利堅
  (ateji) (n,adj-f) (1) (uk) America
  American
  (2) fist
• 意志堅固
  (n,adj-na) strong determination
  strong-willed
  having strong will power
  firmness of purpose
• 義理堅い
  (adj-i) possessed of a strong sense of duty
• 金剛堅固
  (n) firm and solid
  sturdy and indestructible
  unshakable
  adamantine
• 堅い言葉
  (n) stiff speech
• 堅い材木
  (n) hard lumber
• 堅い商売
  (n) sound business
• 堅苦しい
  (adj-i) formal
  strict
  ceremonious
  stiff
• 堅苦しい
  (adj-i) formal
  strict
  ceremonious
  stiff
• 堅忍持久
  (n) dogged perseverance
  untiring patience
• 堅忍不抜
  (adj-na,n) indomitable perseverance
  invincible fortitude
• 堅白同異
  (n) sophism
  sophistry
  quibbling
• 堅牢堅固
  (n,adj-na) firm and solid
  stout and durable
• 口が堅い
  (exp) tight-lipped
  able to keep a secret
• 口の堅い
  (adj-i) tight-lipped
• 志操堅固
  (n,adj-na) being faithful to one's principles
  being of firm purpose and deep commitment
  constancy
  true blue
• 中堅企業
  (n) medium-sized enterprise (business, firm)
• 道心堅固
  (n,adj-na) being of firm (unshakable) faith and strict practice
• 道徳堅固
  (n,adj-na) of strict morals (moral principles)
  highly moral
• 用心堅固
  (n,adj-na) very cautious (watchful, vigilant)
  taking every possible precaution