adj.
Pronunciation: - ' tüd-n ə s, - ' tyüd-; - ' tü-d ə -n ə s, - ' tyü-
Function: adjective
Etymology: platitude + -inous (as in multitudinous )
Date: 1853
: having the characteristics of a platitude : full of platitudes < platitudinous remarks>
– plat · i · tu · di · nous · ly adverb