gratitude
n.
mid-15c., "good will," from Middle French gratitude (15c.) or directly from Medieval Latin gratitudinem (nominative gratitudo) "thankfulness," from Latin gratus "thankful, pleasing" (see grace, n.). Meaning "thankfulness" is from 1560s.
〔李〕[grat=thankful感谢的；-itude n.=the state or quality表性质或状态→] n. thankfulness; appreciation 感谢；感激