"vapid" in the adjective sense
1. bland, flat, flavorless, flavourless, insipid, savorless, savourless, vapid
lacking taste or flavor or tang
"a bland diet"
"insipid hospital food"
"flavorless supermarket tomatoes"
"vapid beer"
"vapid tea"
2. vapid
lacking significance or liveliness or spirit or zest
"a vapid conversation"
"a vapid smile"
"a bunch of vapid schoolgirls"
Source: WordNet® (An amazing lexical database of English)
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