Flat-out and Illimitable

Flat-out adjective - Having no exceptions or restrictions.

Illimitable and flat-out are semantically related. In some cases you can use "Illimitable" instead an adjective phrase "Flat-out".

Illimitable adjective - Being or seeming to be without limits.

Flat-out and illimitable are semantically related. Sometimes you can use "Flat-out" instead an adjective "Illimitable".