Is there any pattern to predict whether to use -ant or -ent, in words such as those below?
abundant / attendant / arrogant VS abhorrent / absorbent / dependent
I find -ent seems to be more common... Some associate -ant with noun and -ent with adjective, but that does not always hold.
-er/-orwords, there is no good rule, though there are a few kind of general "tendencies" that have been observed. – Hot Licks Aug 18 '15 at 00:33