'Gratitude' definitions:

Definition of 'gratitude'

From: WordNet
noun
A feeling of thankfulness and appreciation; "he was overwhelmed with gratitude for their help" [ant: ingratitude, ungratefulness]

Definition of 'Gratitude'

From: GCIDE
  • Gratitude \Grat"i*tude\, n. [F. gratitude, LL. gratitudo, from gratus agreeable, grateful. See Grate, a.] The state of being grateful; warm and friendly feeling toward a benefactor; kindness awakened by a favor received; thankfulness. [1913 Webster]
  • The debt immense of endless gratitude. --Milton. [1913 Webster]