英文的比較級

I think you have to pay attention to some adjectives
that they cannot be written in comparative form or superlative form.

So does "top".It is an example of what I explain to you above.

Other words which includes the suffix ----- most :

Innermost
Utmost
Endmost
Foremost
Headmost
Inmost
Midmost
Rearmost
Upmost