In a way that relates to thinking, reasoning, and the mind rather than emotions or physical actions.
From Latin 'intellectus' (past participle of 'intelligere' meaning 'to understand'), combined with the adverbial suffix '-ally'. The word evolved to describe mental processes as distinct from other forms of understanding.
The word reveals a Western bias toward privileging the mind: intellectually understanding something is often valued more than understanding through emotion, intuition, or physical experience, but some cultures don't make this sharp distinction.
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