Ground, grinded!

ground

'These are the coffee beans I ground for the trip'

A recent TV commercial stated "the fellow was grinded down". Slang, of course, meaning defeated in some way. It did not sound right to me and it prompted this inquiry. Sat and sitted are my next quest.

Email Removed

All I can think of is this:

verb sit - sit/sat/sat (to be in a position with your buttocks on a surface that supports your body, or to cause (someone) to be in this position)
Dad sat her on a chair and told her not to move.

verb seat - seat/seated/seated (to have or be given a place to sit)
Please, be seated.

sitted is not grammarly correct. Even the verb "

I have no doubt that 'grinded' is always wrong. So is 'sitted'. There are a few instances of verbs that have two forms of a past tense. 'Hang' is an example. When referring to the state of something or someone, you would say "my pants hung on a nail." But, when someone is put to death by hanging, you'd say "they hanged him." Doesn't that make English easy?
A fact to remember about verb

As we've noted before on this forum, TV commercials are not a good source of examples of good grammar.

0 I am not a native speaker, but the form 'grinded' is acknowledged in both Oxford English Dictionary and the online Dictionary.com, although as minor in usage, but still perfectly right in some contexts. And since there is no definite authority on English language, you can use the word, of course as long as you know and acknowledge it is "grittier" than 'ground'.0-

Though technically both are correct, 'ground' is by far the most acceptable form. 'grinded' is a rarely used past tense of 'grind'. I happened to take these pair of words into consideration due to my 1st grade daughter being assigned 'grinded' as a spelling word. The American Heritage Dictionary (dictionary.com) does list it as a rare form. The Oxford English Dictionary lists 'grinded' as an

"Ground" is correct. Some claim that "grinded" is acceptable, and that it appears in dictionaries, but that is only because dictionaries reflect what is said by the ignorant as well as what is correct.

Actually, I'm a linguist, so I take major offence at the above.

Both ground and grinded are correct, ground is the more accepted form.

Sat and sitted are likewise correct, though I personally prefer sat. Sitted is inefficient.

And the final thing, dictionaries describe language as it is used. People, on the other hand try to prescribe language usage. In linguistic cir