Mingle (5)
'mingle' is the definition.
(I know that blend is a more specific form of the action mingle)
This is all the clue.
(Other definitions for blend that I've seen before include "Fusion" , "Amalgam" , "union" , "Combine together" , "Combine into one" .)
'mingle' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for mix that I've seen before include "Stir or blend" , "Mingle, blend" , "'Mingle, combine (3)'" , "Associate" , "Blend together" .)