@solipsister,
George, who usually answers the latin threads, is off on vacation and may not notice this for several days.
I seem to remember melior, but have to double check.
Yes, that comes up when I google 'better'.
I took latin a millenium ago for four years but the only book from that I have left isn't a dictionary. George has a more complete knowledge, if you can wait, JohnNaber. (Welcome to a2k, by the way.)
Not to be nosy, but did you go to USC?