All flab antonyms

noun flab

• lack — something missing or needed: After he left, they really felt the lack.
• necessity — something necessary or indispensable: food, shelter, and other necessities of life.
• scarcity — insufficiency or shortness of supply; dearth.
• need — a requirement, necessary duty, or obligation: There is no need for you to go there.
• want — to feel a need or a desire for; wish for: to want one's dinner; always wanting something new.
• skinnier — very lean or thin; emaciated: a skinny little kitten.
• slim — slender, as in girth or form; slight in build or structure.
• thinness — having relatively little extent from one surface or side to the opposite; not thick: thin ice.
• underweight — weighing less than is usual, required, or proper.