thinnest

Having little thickness or extent from one surface to its opposite.

“thin plate of metal;  thin paper;  thin board;  thin covering”

Very narrow in all diameters; having a cross section that is small in all directions.

“thin wire;  thin string”

Having little body fat or flesh; slim; slender; lean; gaunt.

“thin person”

Of low viscosity or low specific gravity.

“Water is thinner than honey.”

Scarce; not close, crowded, or numerous; not filling the space.

“The trees of a forest are thin; the corn or grass is thin.”

Describing a poorly played golf shot where the ball is struck by the bottom part of the club head. See fat, shank, toe.

Lacking body or volume; small; feeble; not full.

Slight; small; slender; flimsy; superficial; inadequate; not sufficient for a covering.

“a thin disguise”