What does "mentally" mean?

In a mental manner; an idea thought out in one's mind, as opposed to an idea spoken orally.

Mentally

Common synonyms include: cerebrally, cognitively, conceptual category, in head calculation, intellectually, inward.

/ˈmɛntəli/ adv

adv ·Rare ·Advanced level

Adverb

1
In a mental manner; an idea thought out in one's mind, as opposed to an idea spoken orally.
"mentally capable"

Adverb

"You must be mentally exhausted."

From mental + -ly.