(noun, adjective, verb)


1. being very thin

Similar word(s): lean, thin, boney, bony, scraggly, scraggy, scrawny, skinny, weedy

Sentences with underweight as an adjective:

- He's so underweight he's had to buy smaller clothes.

- He's thirty pounds underweight.

- The suitcase is just slightly underweight; I'll let it on the plane.

- The fund is underweight in mining.


1. The state or quality of being underweight.


1. (transitive) To underestimate the weight of.

2. (transitive) To give insufficient weight to (a consideration); to underestimate the importance of.