Refractory and Tuff

Refractory adjective - Given to resisting authority or another's control.

Tuff and refractory are semantically related In some cases you can replace term "Tuff" with "Refractory", this adjectives are similar.

Nearby Words: refractoriness, refraction, refractive, refracting, refractional

Tuff noun - Hard volcanic rock composed of compacted volcanic ash.

Refractory and tuff are semantically related in obstinate topic. Sometimes you can use "Refractory" instead an adjective "Tuff".