The most common and most likely answer to this crossword clue is the 10 letter word UNDERSCORE
I've seen this crossword clue in The Times
U
N
D
E
R
S
C
O
R
E
More clues leading to the result UNDERSCORE
- Emphasis rude censor modified
- Fewer than twenty in foreground
- Highlight usual placement of conductor’s stand
- Being still a teenager maybe means stress
- Stress of one still in their teens?
- 18 or 19 ____?
- Emphasise it’s nineteen or fewer?
- Make too few runs, maybe creating stress
- Mark’s after articles from France and Germany, getting stress
- 19, say, is low mark
Buddy explains!
The straight part
We know that "Highlight" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case highlight = underscore.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 UNDERSCORE mean?
UNDERSCORE noun- An underline; a line drawn or printed beneath text; the character _.
- A piece of background music.
- To underline; to mark a line beneath text.
- To emphasize or draw attention to.