The most common and most likely answer to this crossword clue is the 6 letter word WARMER
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Buddy explains!
The straight part
We know that "more hot" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case more hot = warmer.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WARMER mean?
WARMER adjective- Having a temperature slightly higher than usual, but still pleasant; mildly hot.
- Caring and friendly, of relations to another person.
- Having a color in the red-orange-yellow part of the visible electromagnetic spectrum.
- Close, often used in the context of a game in which "warm" and "cold" are used to indicate nearness to the goal.
- Fresh, of a scent; still able to be traced.
- Communicating a sense of comfort, ease, or pleasantness
- Ardent, zealous.
- Well off as to property, or in good circumstances; rich.
- Requiring arduous effort.
- Something that warms, such as a heater or a soup.
- A piece of clothing for warmth, such as a bodywarmer or leg warmer.
- An introductory activity, for example in a lesson, to stimulate interest in a topic.