in ‧ grat ‧ i ‧ tude /ɪnˈɡrætətjuːd, ɪnˈɡrætɪtjuːd $ -tuːd/ BrE AmE noun [uncountable]
[ Word Family: noun : ↑ gratitude ≠ ↑ ingratitude , ↑ ingrate ; adverb : ↑ gratefully ; adjective : ↑ grateful ≠ ↑ ungrateful ]
the quality of not being grateful:
I’ve never seen such ingratitude!