flex

As a noun flex

is (uncountable) flexibility, pliancy.

As a verb flex

is to bend something.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between crook and flex

is that crook is a bend; turn; curve; curvature; a flexure while flex is (uncountable) flexibility, pliancy.

As verbs the difference between crook and flex

is that crook is to bend while flex is to bend something.

As an adjective crook

is (australia|new zealand|slang) bad, unsatisfactory, not up to standard.

As verbs the difference between adjust and flex

is that adjust is to modify while flex is to bend something.

As a noun flex is

(uncountable) flexibility, pliancy.

As nouns the difference between reflex and flex

is that reflex is an automatic response to a simple stimulus which does not require mental processing while flex is flexibility, pliancy.

As verbs the difference between reflex and flex

is that reflex is to bend, turn back or reflect while flex is to bend something.

As an adjective reflex

is bent, turned back or reflected.

As verbs the difference between inflect and flex

is that inflect is to cause to curve inwards while flex is to bend something.

As a noun flex is

(uncountable) flexibility, pliancy.