Standard Lemma guide

underperformer

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • CMU ARPABET: AH1 N D ER0 P ER0 F AO2 R M ER0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

One who or that which underperforms, having performance that is below average or below expectations; often specifically a company or stock

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a business that is less successful than expected

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: business, concern, business concern, business organization, business organisation

3

noun

Meaning 3

a student who does not perform as well as expected or as well as the IQ indicates

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: underachiever, nonachiever

Antonyms: none provided

Broader terms: student, pupil, educatee

History

Etymology

From underperform + -er.