There are monospaced fonts that have the same length no matter what characters are in
Attack
Summon
So a font edit would probably be helpful
A font edit won't be helpful.
1. It changes the classic font, which is not my intention
2. Changing the font takes an enormous amount of work as boxes and displays need to be manually hex edited. The spacing table also needs to be updated.
3. Monospaced fonts end up with certain words being longer than they otherwise would be. Not to mention small letters together look silly.
4. The dialogue font and the battle font are the same - so that would need addressing as well.
5. The battle command box would need to be wider and would then obscure information I want displaying. It would also look ridiculous being that wide.
And all to make Summon fit? Again - saying something and doing something are two different things. I'm the one who'll spend weeks making it work (and the end result will cause 5 more issues). And I'm trying to keep the game as close to the original as I can - so changing font is a no no.
This is the reason I stopped accepting any recommendations. It's not nice having to keep writing responses like this explaining everything - even why Summon won't fit and why the font isn't being changed.
I spent a very long time on this and I looked at all possibilities. The abbreviation is the lesser evil.
If you really want to make the change, learn how to hex edit, learn the tools available here, and become a modder. I've nothing against you editing our work and releasing a mod with full credit.