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Word

instrumental

adjective C1
/ɪnstɹəˈmɛntəl/

Meanings

adjective

playing a very important role in making something happen

instrumental: playing a very important role in making something happen
adjective

relating to musical instruments rather than singing

instrumental: relating to musical instruments rather than singing

Definition

Instrumental means extremely important in making something happen or succeed.

If something is instrumental, it plays a key role in achieving a result. It suggests more than simple help: without it, success would be unlikely or slower. People, decisions, resources, and actions can all be instrumental in change or progress.

Examples

  • Her calm mediation was instrumental in ending the dispute before it escalated.
  • The new data was instrumental in reshaping our research priorities for the next year.
  • Their local partners proved instrumental in navigating cultural expectations during the rollout.
  • I found a mentor who was instrumental in helping me refine my leadership style.
  • The film’s instrumental passages created a tense atmosphere even without dialogue.

Common mistake

Learners often use "instrumental to" instead of the more natural "instrumental in" (e.g., "instrumental in improving results").