6d Group that's curvaceous, but not overdone (6)
?A?C?S
20a He had a profound shakeup, not dreamed about (7-3)
?N?O?E? , F?R
18d Ancient nickname for gear without any males? (8)
C???????
26a Peer into link-rings for a change (4-2)
L??. , ??
15d Stymies all out efforts at being cryptic (10)
M?S???????
^ //an extra personal name given to an ancient Roman citizen, functioning rather like a nickname and typically passed down from father to son, for example Marcus Tullius Cicero.
a name or nickname.//