I have to pursue the others, being fidgety (7)
I believe the answer is:
restive
'being fidgety' is the definition.
(synonyms)
'i have to pursue the others' is the wordplay.
'i have' becomes 'I've' (contraction of 'I have').
'to pursue' says to put letters next to each other.
'the others' becomes 'rest' (eg the rest of a group).
'ive' after 'rest' is 'RESTIVE'.
(Other definitions for restive that I've seen before include "Fidgety, uneasy" , "Impatient - jumpy" , "Unable to stay still" , "It veers around, resisting control" , "Impatient of authority" .)