Answer: pining

AnswerCrossword Clue
PININGLanguishing.
PININGYearning
PININGLike a lonesome swain
PININGLanguishing
PININGFeeling a loss
PININGHeartsick (for)
PININGEcho's activity
PININGAching (for)
piningPINE, to languish with longing
piningMiss and long for the return of
piningSuffer a mental and physical decline, esp. because of a broken heart