It isn't Greek. Flex actually comes from the Latin word for 'bent.'
It means "to bend".
Assuming you mean cred- as in incredible, credibility, etc., it comes from the Latin word credere (to believe).
"Flex" in Latin can mean "bend" or "to curve." It is often used in words related to flexibility or bending, such as "flexibilis" meaning flexible.
skill
Flex a greek or latin
Don is not a Greek root word.
life
it is not a greek root or any root
The root mem is not greek, but latin. It means 'mind'.
The Greek root carci- means cancer
The Greek root "lith" means stone. It is commonly seen in words related to rocks, minerals, or stones, such as "lithosphere" (the rigid outer layer of Earth) or "lithotomy" (surgical removal of a stone).
It 's not a Greek root word, so it doesnt mean anything.
The Greek root "homo" means "same" or "alike." It is commonly used in words related to similarity or sameness.