Started to welcome care, being tolerant (4-6)
I believe the answer is:
open-minded
'tolerant' is the definition.
(thesaurus)
'started to welcome care' is the wordplay.
'started' becomes 'opened' (opening is a kind of starting).
'to welcome' indicates putting letters inside (inserted letters are welcomed in).
'care' becomes 'mind' (I've seen this in another clue).
'opened' enclosing 'mind' is 'OPEN-MINDED'.
'being' is the link.
(Other definitions for open-minded that I've seen before include "Willing to consider new ideas" , "Unprejudiced, receptive" .)