languish

Concise Oxford English Dictionary © 2008 Oxford University Press:
languish/ˈlaŋɡwɪʃ/

▶verb

• 1 grow weak or feeble.

  ■ archaic pine with love or grief.

• 2 be kept in an unpleasant place or situation: he was languishing in jail.

– derivatives
languisher noun,
languishment noun (archaic).

– origin ME: from OFr. languiss-, lengthened stem of languir, from a var. of L. languere, rel. to laxus ‘lax’.