Properly (4)
'properly' is the definition.
(synonyms)
This is all the clue.
(Other definitions for by rights that I've seen before include "Legitimately" , "If things were fair" .)
'properly' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for well that I've seen before include "How one might like one's steak?" , "Fortunate" , "and 24: Almost" , "run" , "Flood - thoroughly" .)