As a freebie, the Chrome game Crosswords Arena is a deal, but I wonder if the English dictionary is cobbled together by non-English speakers…
Here is a game I won:
My last word was “KAT”.
Now the only way that is an English word is as a spelling variant of “khat” which is common word for an African plant.
Oh well, the computer is easy enough to beat, at least if I’m not under the clock.