Snake comparatively nasty biting daughter (7)
I believe the answer is:
meander
'snake' is the definition.
(I know that meander is a is a more specific form of the action of snake)
'comparatively nasty biting daughter' is the wordplay.
'comparatively nasty' becomes 'meaner' ('mean' can be similar in meaning to 'nasty').
'biting' is an insertion indicator (some letters bite or swallow others).
'daughter' becomes 'd' (genealogical abbreviation).
'meaner' going around 'd' is 'MEANDER'.
(Other definitions for meander that I've seen before include "Wander about, follow a winding course" , "Roam aimlessly around" , "Follow a random path" , "Wander aimlessly like a stream" , "Dear men (anag) - wander" .)