The most common and most likely answer to this crossword clue is the 5 letter word GREEK
I've seen this crossword clue in Independent
G
R
E
E
K
More clues leading to the result GREEK
- European king attending match, hiding crown
- European government’s right response to scare tactics
- European garlic’s beginning to pong!
- Tongue licking other bottoms – yikes!
- Something incomprehensible from Tsipras say
- Attic’s first signs of giant rodent; I’m scared!
- European leader in rain wearing anorak, perhaps?
- Queen absorbed by nerd’s language
- Bad odour following Grand National?
- European runs in anorak?
Buddy explains!

The straight part
We know that "European" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case european = greek.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 GREEK mean?
GREEK noun- An inhabitant, resident, or person of descent from Greece.
- Unintelligible speech or text, such as foreign speech or text, or regarding subjects the listener is not familiar with, such as mathematics or technical jargon; or statements that the listener does not understand or agree with.
- A member of a college fraternity or sorority, which are characterised by being named after Greek letters. (See also Greek system.)
- A cunning rogue; a merry fellow.
- Anal sex.
- Greek cuisine; traditional Greek food.
- (chiefly in the plural) One of the Greeks, measures of derivative price sensitivity.
- To display a placeholder (instead of text), especially to optimize speed in displaying text that would be too small to read.
- To fill a template with nonsense text (particularly the Lorem ipsum), so that form can be focused on instead of content.