Smash
Hack
Well done, sir. Now tell me about greasy. This is my favorite descriptor..lmaoI am going to do my personal best at describing these two adjectives, based on my own experience with countless amps and sounds etc. Each to their own ears and description ofcourse, tomato = Tomah-to.
"Chewy", to me that is when the amp has this very slight kind of sag in the feel, not too stiff, so the mid frequency seems to have a touch of added thickness to the sound, so much so that it sounds like it is bigger due to the sag. Play a bogner 101 B on blue channel for a great example.
"Hairy", to me that is when the amp gain structure has this "hair" on notes, searing gain that is like a controlled explosion. The "hair" on your chords or power chording, is the little bit of grainy sizzle you hear or "grind". It is not smooth or raw, but a perfect combination of the two. Mesa mark series are great examples imo as well as the Wizard amps.