Source : Webster's Revised Unabridged Dictionary (1913)

Tearful \Tear"ful\, a.
   Abounding with tears; weeping; shedding tears; as, tearful
   eyes. -- {Tear"ful*ly}, adv. -- {Tear"ful*ness}, n.

Source : WordNet®

tearfulness
     n : sadness expressed by weeping [syn: {weepiness}]