FF2 - Why the hell did Firion's magic abilities increase?

[Peter_20]

White magic + armor = gimped

Black magic + bow = gimped

Any magic at all + sword = gimped

Shield = gimped in general

Double axes = roxx0r

What does "gimped" mean?
I'm not American nor Britisher, so I'm having trouble with some words every now and then,
and I can't find this word anywhere in my dictionaries.

I suppose it means "not very good" or something like that, though.

CROSSBLADES:
You should at least have Josef learn Cure, Fire and Ice.
It's not too expensive, and it comes to very good use in the Ice Cave.

[rubah]

something gimpy can't walk very well, so yes, not very good.

[KagomJack]

Maria is my sole Black Mage. Firion is the White Mage. Gus/Guy is kind my jack of all trades, having both Black and White magic, mostly just for back-up in case MP runs out on Maria or Firion.

[Peter_20]

I always thought you needed more than one wizard in a certain magic in this game.
A sole user of Cure16 with 200 MP just won't last in Jade/Pandemonium.

[Doomie]

I basically give every character Cure, Life, Ice, Fire, and Bolt. I also give them all Holy. They always have double weapons, and Guy always has his axes.