cuz

con- (Latin)

Used in compounds to indicate a being or bringing together of several objects. Used in compounds to indicate the completeness, perfecting of any act, and thus gives intensity to the signification of the simple word.

sobrinus (Latin)

Maternal cousin (male).

com- (Latin)

consobrinus (Latin)

A first cousin, cousin-german. A maternal male cousin; the child of a mother's brother. A relation.

cosin (Old French)

Cousin.

cousin (English)

(obsolete) A title formerly given by a king to a nobleman, particularly to those of the council. In English writs, etc., issued by the crown, it signifies any earl.. Any relation who is not a direct ancestor or descendant; one more distantly related than an uncle, aunt, granduncle, grandaunt, nephew, niece, grandnephew, grandniece, etc.. The son or daughter of a person’s uncle or aunt; a [...]

cuz (English)

(informal) cousin (usually as a term of address, but not necessarily towards one's cousin).