"Don't look a gift horse in the mouth" synonyms
“Don't look a gift horse in the mouth” synonyms?
ingratitude or to be ungrateful OED
- Want or absence of gratitude; indisposition to acknowledge or reciprocate benefits received; unthankfulness; ungratefulness.
As in:
Defeating ingratitude in our kids is largely dependent on them seeing gratitude in us. Fox News Nov 18, 2018