"glib" in the adjective sense
1. glib
marked by lack of intellectual depth
"glib generalizations"
"a glib response to a complex question"
2. glib, pat, slick
having only superficial plausibility
"glib promises"
"a slick commercial"
3. glib, glib-tongued, smooth-tongued
artfully persuasive in speech
"a glib tongue"
"a smooth-tongued hypocrite"
Source: WordNet® (An amazing lexical database of English)
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