The most common and most likely answer to this crossword clue is the 7 letter word FREEDOM
I've seen this crossword clue in The Times
F
R
E
E
D
O
M
More clues leading to the result FREEDOM
- Exemption from having to cross ebbing river
- Liberty from having to go round ebbing river
- Exemption from holding river back
- Release, from loud wind instrument, a contemplative sound
- Note about fashion turnover’s flexibility
- Regularly force feed tommy with permission
- Liberty formed by first English revolution
- Licence charge about right with party millions
- Liberation! Benedictine on the house!
- One is not bound to enjoy it
Buddy explains!

The straight part
We know that "Exemption" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case exemption = freedom.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 FREEDOM mean?
FREEDOM noun- The state of being free, of not being imprisoned or enslaved.
- The lack of a specific constraint, or of constraints in general; a state of being free, unconstrained.
- Frankness; openness; unreservedness.
- Improper familiarity; violation of the rules of decorum.