The most common and most likely answer to this crossword clue is the 8 letter word GUERILLA
I've seen this crossword clue in Financial Times
G
U
E
R
I
L
L
A
More clues leading to the result GUERILLA
- I’ll argue sadly that I’m irregular, yet….
- It sounds a beastly form of warfare
- Animal sounds from terrorist
- Good university with time suppressing trouble that’s irregular
- Irregular ape on the radio
- Utter brute – one who fights
- To a limited extent, beleaguer ill- advised band member?
- One fighting fit by stream, cycling
Buddy explains!
The straight part
We know that "band member" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case band member = guerilla.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 GUERILLA mean?
GUERILLA noun- A soldier in a small independent group, fighting against the government or regular forces by surprise raids.
- A non-official war carried out by small independent groups; a guerrilla war.