>>>BTW I don't know why we say "later on" most of the time. There is no "later off" or, indeed, any other type of later.
>>
>>What's the reverse of "appoint"?
>
>Sack? Fire?

OK, you didn't buy this one. But was "disappoint" a close candidate?

>What's the sig. of that?

Close to zero. Just another example of logic vs history - words which would be antonyms by construction often aren't even related. Cf. barred vs disbarred.

>>Or, why are people feeling bad when they're p'd off? Would they feel better if they were p'd on?
>
>Americanism often misses out the "off" bit nowadays, nicht wahr, but the word alone in anglo means "drunk" (innebriated)

Yep, I remember that one, all my Dutch and German friends used to... use the word in that way.