reading voice
唔 centers on the sound of a voice being read aloud or vocalized. Its meaning is narrow, referring specifically to a reading voice.
唔 combines 口 (mouth) with 吾, which likely contributes the sound ゴ. The character is used to represent a reading voice, with the mouth component indicating vocalization.
The mouth 口 on the left and 吾 on the right suggest a mouth producing the sound ゴ, like a voice reading aloud.
For ゴ, imagine a person saying 'Go!' as they start reading a passage aloud: Go -> ゴ, and the mouth 口 in 唔 opens to speak.
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