Divers with no clue, aimless at sea (13)
I believe the answer is:
miscellaneous
'divers' is the definition.
(thesaurus)
'no clue aimless at sea' is the wordplay.
'at sea' indicates an anagram.
'no'+'clue'+'aimless'='noclueaimless'
'noclueaimless' with letters rearranged gives 'MISCELLANEOUS'.
'with' is the link.
(Other definitions for miscellaneous that I've seen before include "Of various types" , "Multifarious" , "Consisting of several kinds" , "Mixed, varied" , "Not just one kind" .)