"silkier" in the adjective sense
1. satiny, sleek, silken, silky, silklike, slick
having a smooth, gleaming surface reflecting light
"glossy auburn hair"
"satiny gardenia petals"
"sleek black fur"
"silken eyelashes"
"silky skin"
"a silklike fabric"
"slick seals and otters"
Source: WordNet® (An amazing lexical database of English)
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