The most common and most likely answer to this crossword clue is the 7 letter word INANITY
I've seen this crossword clue in The Sunday Telegraph
I
N
A
N
I
T
Y
More clues leading to the result INANITY
- Lunacy omitting son in senseless action
- Foolishness in a year will have fool incarcerated
- Isn’t it commonly showcasing adult Yankee senselessness?
- Being stupid in a tiny way
- Heads away from din, can pity silly behaviour
- At home, auntie regularly has time for unknown silliness
- One refusal covers idiot’s vacuity
- At home, why ultimately catching a bug is silliness
- Senselessness of madness without a hint of sanity
- From madness, putting out small idiotic remark
Buddy explains!
The straight part
We know that "silly behaviour" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case silly behaviour = inanity.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 INANITY mean?
INANITY noun- The property of being inane, of lacking material of interest or satisfaction, emptiness.
- Something that is inane.