gerund or verb
No, gestured is a verb. Superlatives are adjectives or adverbs.
Gesturing with your hands while you talk
The present participle of gesture is gesturing----------------See also Related questions below.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.
The part of speech for "explicit" is an adjective.