- (transitive; usually passive) to deprive of or fail to provide with nutrients essential for health and growth
WordReference Random House Learner's Dictionary of American English © 2026
un•der•nour•ished /ˌʌndɚˈnɜrɪʃt, -ˈnʌr-/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- Nutritionnot nourished with enough or proper food for health or growth.
- lacking the essential elements for proper development:emotionally undernourished.
un•der•nour•ished
(un′dər nûr′isht, -nur′-),USA pronunciation adj.
un′der•nour′ish•ment, n.
- Nutritionnot nourished with sufficient or proper food to maintain or promote health or normal growth.
- not given essential elements for proper development:emotionally undernourished.
- under- + nourish + -ed2 1925–30
Collins Concise English Dictionary © HarperCollins Publishers::
undernourish /ˌʌndəˈnʌrɪʃ/ vb