"slenderer" in the adjective sense
1. slender, slight, slim, svelte
being of delicate or slender build
"she was slender as a willow shoot is slender"- Frank Norris
"a slim girl with straight blonde hair"
"watched her slight figure cross the street"
2. slender, thin
very narrow
"a thin line across the page"
3. slender
having little width in proportion to the length or height
"a slender pole"
4. slender, slim
small in quantity
"slender wages"
"a slim chance of winning"
"a small surplus"
Source: WordNet® (An amazing lexical database of English)
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