subvocal

[suhb-voh-kuh l]
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adjective

mentally formulated as words, especially without vocalization.

Origin of subvocal

First recorded in 1920–25; sub- + vocal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for subvocal

Historical Examples of subvocal