Meaning of the word unjustifiable in English

What does unjustifiable mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

unjustifiable

US /ʌnˌdʒʌs.təˈfaɪ.ə.bəl/
UK /ʌnˌdʒʌs.tɪˈfaɪ.ə.bəl/

Adjective

not able to be shown to be right or reasonable; indefensible

Example:
His actions were completely unjustifiable.
The high cost of the project was unjustifiable given the limited benefits.