The preferred comparative form is more suitable and the superlative form is most suitable.
Suitabler and suitablest are grammatically correct, though they may sound wrong to some people. Abler and ablest are the normal degrees of able. Only the pouty prim insist on "more able."
Comparative: more suitable Superlative: most suitable
The comparative form of the word "ugly" is "uglier," and the superlative form is "ugliest."
The comparative is "stricter" and the superlative is "strictest".
The comparative form of "well" is "better" and the superlative form is "best."
The comparative form of 'large' is 'larger' and the superlative form is 'largest'.
The comparative form of "grouchy" is "grouchier" and the superlative form is "grouchiest."
the comparative and superlative forms of the word near are nearer(in comparative form) and nearest(in superlative form).
Smoothest is the superlative form of the word smooth. The comparative form is smoother.
Mere does not have a comparative form. The superlative form is merest
The comparative form is tinier and the superlative form is tiniest.
The comparative form of the word "cheap" is "cheaper." The superlative form is "cheapest."
Comparative form: Quicker Superlative form: Quickest
The comparative form of tinny is tinnier, and the superlative form is tinniest.
The comparative form of ''easy'' is ''easier'' and its superlative form is ''easiest''.
"Beg" is a verb and, as such, does not have a comparative or superlative form.
The comparative is "stricter" and the superlative is "strictest".
comparative: earlier superlative: earliest
Comparative-greener, Superlative-greenest