verb ·Rare ·Advanced level

Definitions

Verb

1. 1
   To make an inadequate commitment; to commit (oneself to) too little (of). ambitransitive

Synonyms

All synonyms

underpromise

Antonyms

All antonyms

overcommitoverpromise

Etymology

From under- + commit.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.