instrumental

Definition

Essential or central; of great importance or relevance.

Etymology

From Middle English instrumental, instrumentale, from Medieval Latin īnstrūmentālis, equivalent to instrument + -al.

Example Sentences

• "He was instrumental in conducting the business."
• "The head is not more native to the heart, The hand more instrumental to the mouth"
• "Few songwriters have been as instrumental in creating the mold for American music."

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