its tuff
grit, guts
The four letter word that means, "I forbid," is veto.veto
Depending on context, "character" could mean tone, feel, grit, guts, name, soul, role, part, sign, mark
The four letter word is dawn.
Exit
fern
jane eyre
A four letter word meaning the foundation of something is base.
aide
Fast
asea
step