The most common and most likely answer to this crossword clue is the 6 letter word AERATE
I've seen this crossword clue in The Daily Telegraph
A
E
R
A
T
E
More clues leading to the result AERATE
- Aged manner to perturb
- Scoffed about long time to pump in gas
- Film department returned to put holes in lawn
- Make bubbly that’s consumed over a long time
- Expose caterer, regularly hiding vermin
- Give oxygen to a singer that has been gripped by drugs
- Pump up a cycle – flat tyre, at rear
- Add gaseous mixture to a tea drunk by the Queen
- Pass gas through all extra lids with speed
- Make effervescent putting article on a tree that’s shimmering
Buddy explains!
The straight part
We know that "to mix in air" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to mix in air = aerate.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 AERATE mean?
AERATE verb- To supply with oxygen or air.