Third-person singular simple present indicative form of challenge

plural of challenger

Able to be challenged or disputed.

A space shuttle, named after HMS Challenger (1858), destroyed on January 28, 1986 with loss of its seven-member crew.

(rail transport) a steam locomotive of the 4-6-6-4 wheel arrangement.

Alternative form of challengeable

plural of Challenger

Full of challenge.

(humorous, euphemistic, of a person) Of low intelligence; stupid.

(humorous, euphemistic, of a person) Unable to cook.