Definition of well-justified in US English:

well-justified

adjective

  • Fully supported by reason, evidence, or right; entirely warranted.

Origin

Mid 17th century; earliest use found in Daniel Featley (1582–1645), Church of England clergyman and religious controversialist. From well + justified.

Pronunciation

well-justified

/ˌwɛlˈdʒʌstɪfʌɪd/