Swallow and insect flying around live action
I believe the answer is:
believe
'swallow' is the definition.
(thesaurus)
'insect flying around live action' is the wordplay.
'insect' becomes 'bee' (bee is a kind of insect).
'flying around' indicates putting letters inside.
'action' is an anagram indicator.
'live' with letters rearranged gives 'liev'.
'bee' placed around 'liev' is 'BELIEVE'.
'and' acts as a link.
(Other definitions for believe that I've seen before include "Have faith; accept" , "Trust" , "Accept as true" , "Credit; accept" , "Swallow" .)