Compounds of 堅い

• 堅い
  (adj-i) (1) hard
  solid
  tough
  (2) stiff
  tight
  wooden
  unpolished (e.g. writing)
  (3) strong
  firm (not viscous or easily moved)
  (4) safe
  steady
  honest
  steadfast
  (5) obstinate
  stubborn
  (6) bookish
  formal
  stuffy
  (P)
• 堅い女
  (n) chaste woman
• 口堅い
  (adj-i) discreet
  tight-lipped
• 手堅い
  (adj-i) steady
  firm
  solid
  secure
  (P)
• 底堅い
  (adj-i) stable (market) after having bottomed out
• 物堅い
  (adj-i) honest
  upright
  faithful
  reliable
• 義理堅い
  (adj-i) possessed of a strong sense of duty
• 堅い言葉
  (n) stiff speech
• 堅い材木
  (n) hard lumber
• 堅い商売
  (n) sound business
• 口が堅い
  (exp) tight-lipped
  able to keep a secret
• 口の堅い
  (adj-i) tight-lipped