Senior editor immediately knocked up puzzles (7)
I believe the answer is:
wonders
'puzzles' is the definition.
The definition and answer can be both related to thinking as well as being verbs in their -s form.
Maybe you can see a link between them that I don't see?
'senior editor immediately knocked up' is the wordplay.
'senior' becomes 'sr' (abbreviation).
'editor' becomes 'ed' (abbreviation).
'immediately' becomes 'now' (I've seen this before).
'knocked up' says the letters should be written in reverse.
'sr'+'ed'+'now'='srednow'
'srednow' backwards is 'WONDERS'.
Can you help me to learn more?
(Other definitions for wonders that I've seen before include "Prodigies, miracles" , "Questons, marvels" , "Curiosities" , "Marvels - there used to be seven of them in the world" , "Questions, marvels" .)