The most common and most likely answer to this crossword clue is the 3 plus 2 letter word LET ON
I've seen this crossword clue in Financial Times
L
E
T
O
N
More clues leading to the result LET ON
- Reveal the French fashion
- Reveal revolutionary memo introduced by left
- Reveal one alone denied sing
- Reveal impediment to Rona stripping off
- Admit what passengers hope a bus conductor will do to them
- Reveal permit to board
- Disclose awareness of large 4
- It’s disclosed in letters from Aristotle to Nicomachus
- Liberal school revealed
- Tell me what’s essential for muscle tone!
Buddy explains!
The straight part
We know that "Reveal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case reveal = let on.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.