Causing tears in uniform, adjusting clothing gently (9)
I believe the answer is:
upsetting
'causing tears' is the definition.
I can't judge whether this defines the answer.
'uniform adjusting clothing gently' is the wordplay.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'adjusting' becomes 'setting' ('set' can be a synonym of 'adjust').
'clothing' means one lot of letters goes inside another (some letters cover up or clothe others).
'gently' becomes 'p' (musical abbreviation for 'piano', softly).
'u'+'setting'='usetting'
'usetting' placed around 'p' is 'UPSETTING'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for upsetting that I've seen before include "Disturbing or upturning" , "Alarming" , "Likely to put out" , "Distressing" , "sad?" .)