adj, verb ·Rare ·Advanced level

Definitions

Verb

1. 1
   To slow the rate of rotation in (a pulley-based system). transitive

Adjective

1. 1
   Designed to turn at a slower speed than stock. not-comparable

Etymology

From under- + drive.

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