A female who while only
appearing to be a "five" (five out of
ten for looks) has other qualities that make up or more than
make up for this (e.g. intelligence, wit, fun/warm personality, etc.) and who is therefore worth being with even though not outstandingly attractive to look at.
"When I first met her I thought I wasn't that interested and only
rated her as
a five, but now I've got to know her,
well I'd say she's definitely a "high five"!"