The most common and most likely answer to this crossword clue is the 8 letter word IMPROPER
I've seen this crossword clue in Financial Times
I
M
P
R
O
P
E
R
More clues leading to the result IMPROPER
- I’m supporting exercises, right? Wrong
- Person selling clothing in Miami returning skirts for not fitting
- A little mischief by lassoer is unseemly
- Rude sprite with tie to king
- Hesitation after Peto’s support becomes irregular
- Emir wrongly receives support? It’s not in order
- Rude little devil runs after guy?
- Unseemly Cockney’s that man with crutch coming before the Queen
- Unsuitable one tying up the little devil?
- This person’s given support with little hesitation – it’s wrong
Buddy explains!
The straight part
We know that "irregula" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case irregula = improper.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 IMPROPER mean?
IMPROPER verb- To appropriate; to limit.
- To behave improperly
- Unsuitable to needs or circumstances; inappropriate; inapt
- Not in keeping with conventional mores or good manners; indecent or immodest
- Not according to facts; inaccurate or erroneous
- Not consistent with established facts; incorrect
- Not properly named; See, for example, improper fraction
- Not specific or appropriate to individuals; general; common.