skinny
thin. slender.
Boiling
As ser is weak
Lanky is neither a synonym or antonym - it is an adjective. A synonym to "lanky" would be "lean"; an antonym would be "husky".
Sheer, thin, and delicate
elongate
Emaciated is a synonym of thin that carries the most negative connotation, suggesting extreme thinness often due to illness or malnutrition.
unstable?
Lanky
Fat : thin
The same word "thin" is used.One synonym for a thin person, twiggy, inspired the professional name of 1960s model Leslie Lawson.
delicate. flimsy. frail. slight. tenuous. thin.