having a circumference that is small in proportion to the height or length

a slender post.

thin or slight; light and graceful

slender youths.

small in size, amount, extent, etc.; meager

a slender income.

having little value, force, or justification

slender prospects.

thin or weak, as sound.

adjective

angular , bony , fleshless , gaunt , lank , lanky , lean , meager , rawboned , scrawny , skinny , slim , spare , twiggy , weedy , faint , negligible , outside , slight , abstemious , acicular , aciculate , delicate , feeble , fragile , frail , frugal , gracile , inconsiderable , lissome , lithe , lithesome , little , minute , narrow , plain , remote , scant , small , spindling , svelte , tenuous , thin , trim , trivial , weak , willowy , wiry , wispy

noun

gracility , slenderness , tenuity , thinness