Compounds of 憾

• 遺憾
  (adj-na,n) regrettable
  unsatisfactory
  (P)
• 憾み
  (n) (1) resentment
  grudge
  malice
  bitterness
  (2) matter for regret
  regret
• 憾む
  (v5m,vt) (1) to resent
  to curse
  to feel bitter
  to blame
  to bear a grudge
  (2) to regret
• 遺憾なく
  (adv) unobjectionally
  fully
• 遺憾千万
  (adj-na) highly regrettable
  utterly deplorable
• 遺憾無く
  (adv) unobjectionally
  fully
• 憾むらくは
  (exp,adv) I regret that
  I feel terrible but
  I'm sorry but
• 遺憾に堪えない
  (exp,adj-i) really regrettable