impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"
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"
small in quantity; "slender wages"; "a slim chance of winning"; "a small surplus"
having little width in proportion to the length or height; "a slender pole"
excessively unwilling to spend; "parsimonious thrift relieved by few generous impulses"; "lived in a most penurious manner--denying himself every indulgence"