The most common and most likely answer to this crossword clue is the 7 letter word INANELY
I've seen this crossword clue in The Times
I
N
A
N
E
L
Y
More clues leading to the result INANELY
- Ridiculously, any line is wrong
- Without thinking, building home next to an East Anglian city
- How fools behave in an East Anglian city
- One child’s granny goes to see how 11s act
- See under current article ludicrously
- Any line crossed in a daft way
- Lunatic missing son near Langley outskirts ludicrously
- Ludicrously, Stokes is dismissed in a nonsensical manner
- Altering any line without reason
- Stupidly see following current old lady
Buddy explains!

The straight part
We know that "Ridiculously" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ridiculously = inanely.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.