Skip backwards, being a bit timorous (4)
I believe the answer is:
omit
'skip' is the definition.
(I've seen this before)
'backwards being a bit timorous' is the wordplay.
'backwards' is a reversal indicator.
'being' becomes 'imo' (I am not sure about this - if you are sure you should believe this answer much more).
'a bit' says to take the initial letters (I've seen 'a bit of' mean this).
The initial letter of 'timorous' is 't'.
'imo' written backwards gives 'omi'.
'omi'+'t'='OMIT'
Can you help me to learn more?
(Other definitions for omit that I've seen before include "Exclude; veto" , "Leave out or overlook" , "Leave out or fail to do" , "Exclude; forget to include" , "Fail to use" .)