The most common and most likely answer to this crossword clue is the 7 letter word AMUSING
I've seen this crossword clue in Independent
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More clues leading to the result AMUSING
- Comic needing an act of reflection
- Answer in contemplation for comic
- A product of thought? That’s funny
- Funny, a reflection
- Funny old lady back on drugs?
- Australian given to reflection? Laughable
- Witty article on reflection
- One wondering what it’s like to be funny
- Comical Welsh politician on drugs?
- Article on Dynasty captivating America might be funny
Buddy explains!

The straight part
We know that "like nitrous oxide" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like nitrous oxide = amusing.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 AMUSING mean?
AMUSING verb- To entertain or occupy in a pleasant manner; to stir with pleasing emotions.
- To cause laughter or amusement; to be funny.
- To keep in expectation; to beguile; to delude.
- To occupy or engage the attention of; to lose in deep thought; to absorb; also, to distract; to bewilder.
- Entertaining.
- Funny, hilarious.