"mouthing" in the verb sense
1. talk, speak, utter, mouth, verbalize, verbalise
express in speech
"She talks a lot of nonsense"
"This depressed patient does not verbalize"
2. mouth
articulate silently form words with the lips only
"She mouthed a swear word"
3. mouth
touch with the mouth
Source: WordNet® (An amazing lexical database of English)
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