Stays away from, because there’s a chasm in (6)
I believe the answer is:
avoids
'stays away from' is the definition.
(I've seen this before)
'because there's a chasm in' is the wordplay.
'because' becomes 'as' (I've seen this in other clues).
'there's a chasm' becomes 'void' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' indicates putting letters inside.
'as' going around 'void' is 'AVOIDS'.
Can you help me to learn more?
(Other definitions for avoids that I've seen before include "Escapes" , "Shuns, keeps away from" , "Ducks (out of)" , "Steers clear of, dodges" , "Keeps away or refrains from" .)