Disappointment when everyone keeps their emotions in check? (3-5)
I believe the answer is:
non-event
'everyone keeps their emotions in check?' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'disappointment when' is the wordplay.
I cannot really see how this works, but
'when' could be 'on' (I've seen this in other clues) and 'on' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for non-event that I've seen is " disappointing affair".)