What does "crasis" mean?

One's constitution; the balance of humours in a person's body.

What is a synonym for "crasis"?

Common synonyms include: abbreviation, body build, brand, cast, character, characteristic.

/ˈkɹeɪsɪs/ noun

noun ·Rare ·Advanced level

Noun

1
One's constitution; the balance of humours in a person's body. countable, obsolete, uncountable
"Some men have peculiar symptoms, according to their temperament and crasis, which they had from the stars and those celestial influences […]"
2
A mixture or combination. countable, uncountable
3
The contraction of a vowel or diphthong at the end of a word with a vowel or diphthong at the start of the following word. countable, uncountable
"When in a crasis, a lene consonant […] is combined with an aspirated vowel, the lene is always changed (except in the Ionic dialect) into the corresponding aspirate […]"

"I still don't know how to use the crasis perfectly."

From Ancient Greek κρᾶσις (krâsis, “mixture”).