1

underweight

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noun un·der·weight \ˌən-dər-ˈwāt\

Definition of underweight

  1. :  weight below normal, average, or requisite weight

1596

First Known Use of underweight

1596


2

underweight

adjective un·der·weight

Definition of underweight

  1. :  weighing less than the normal or requisite amount

Examples of underweight in a sentence

  1. <the long illness left him frail and underweight>

1675

First Known Use of underweight

1675


UNDERWEIGHT Defined for English Language Learners


2

underweight

adjective un·der·weight

Definition of underweight for English Language Learners

  • : weighing less than the normal or expected amount : too light


UNDERWEIGHT Defined for Kids

underweight

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adjective un·der·weight \ˌən-dər-ˈwāt\

Definition of underweight for Students

  1. :  weighing less than what is normal, average, or necessary


Medical Dictionary

underweight

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adjective un·der·weight \-ˈwāt\

Medical Definition of underweight

  1. :  weighing less than the normal amount for one's age, height, and build <underweight children> <underweight adults typically have a body mass index of less than 18.5>


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