”cooler” or ”more cool” ?

Depends on context. Normally, the comparative form of an adjective is " -er." If it’s awkward to do so, or if the adjective has several syllables, you add "more" in front- "He is more adamant than I am about politics." (Not " … is adamanter.") Thus the simple answer to your question is "cooler." Other one-syllable adjectives have similar comparatives: hotter, older, shorter, meaner.

I can’t explain why "silly" becomes "sillier" but "upright" becomes "more upright." English isn’t easy to learn.

If you are using less-than-standard speech, if you’re speaking as a sub-standard teen, then you might say, "Those goth clothes are super-cool."

In general, colloquial (hence sub- standard) English has adopted "super" as a superlative- to designate something extraordinarily modified. "Super-cool parents let you drink." "Super-nice teacher lets you turn in hoomework late." (Most parents wouldn’t let you drink; most teachers won’t accept late work.) This use of "super" is only acceptable in sub-standard usage, never in correct English. … Take care!

Cool And Cooler

It depends hw you want to use the word.

All three can be used. More cool and cooler are interchangeable, and they are comparative cooler or more cool than ( somebody else )

Super cool is a descriptor, for somethinmg or somebody, but not a comparison

Hope this helps

Cooler.

Cooler

More super.

Rule of thumb: When the adjective is one syllable, you add -er. When it’s two syllables, it can go either way, depending which sounds better. When it’s longer, you put "more" in front of it.

The water is cool.

The water is cooler.

This water is the coolest.

English is a very rhythmic language, and that’s why it fits so well Blues/Rock/Metal music and not so well Opera.

Sometimes some words aren’t necessary but are introduced just for the rithmic part, for instance "have you got" instead of "have you" etc.

People do speak as they like, and I have spotted mother tongue ministers making mistakes and also I caught UK Royals saying "Much" when they should have said "Many".

For instance we can’t say lots of people because people can be counted and so we should say Many people, Many dogs, many seeds, much heat, much water etc. Languages do evolve and errors become accepted as proper language, but the "Lots of people’ one isn’t just yet.

Anyway, when the adjective is short and its accent is just one beat, we shouldn’t say "more" but we add the "er" to the end of it.

Example of a one beat accent: cool, hot, short, tall, green, red, nice.

People do speak as they like but it isn’t correct to say more hot, more tall, more green etc. When it is one beat one should add the er at the end. So we have hotter, greener, taller, wilder, sicker,

Some examples, I will separate the beats with ">"

Example of a two beat accent : hand>some, sca>red

Example of a three beats accent: beau>ti>ful, a>ma>zing, co>lo>red

Example of a four beats accent: in>cre>di>ble

Of course there are exceptions, for instance the adjective “cle>ver” is indeed two beats but we say cleverer, maybe because its rhythm almost dictates that it stays a two beats word even with the er grafted to the end .

Even more awesomer!

any of these ?