Definitions
1.nounThe state or quality of being underweight.
2.nounAn underweight person.
3.verbTo underestimate the weight of.
4.verbTo give insufficient weight to (a consideration); to underestimate the importance of.
5.adjectiveOf an inappropriately or unusually low weight."He's so underweight he's had to buy smaller clothes."
6.adjectiveNot too heavy for an intended purpose."The suitcase is just slightly underweight; I'll let it on the plane."
7.adjectiveBeing less invested in a particular area than market wisdom suggests."The fund is underweight in mining."