justifiable
adjective /ˌdʒʌstɪˈfaɪəbl/,  /ˈdʒʌstɪfaɪəbl/
  /ˌdʒʌstɪˈfaɪəbl/,  /ˈdʒʌstɪfaɪəbl/
- existing or done for a good reason, and therefore acceptable synonym legitimate
- She took a justifiable pride in her son's achievements.
 
Extra Examples- The rule is justifiable on safety grounds.
 - We consider this action justifiable.
 - Paying low wages is no longer justifiable.
 - There were no justifiable grounds for sending him to prison.
 - We need to address the justifiable concerns of the environmentalists.
 
Oxford Collocations Dictionaryverbs- be
 - seem
 - become
 - …
 
- completely
 - entirely
 - perfectly
 - …
 
- on the grounds of something
 - on the grounds that…
 - on… grounds
 - …
 
Word Originearly 16th cent. (in the sense ‘ready to be judged’): from French, from justifier ‘to justify’.