justify
Pronunciation: /ˈdʒʌstɪfʌɪ/
verb ( justifies, justifying, justified)

Origin:
Middle English (in the senses 'administer justice to' and 'inflict a judicial penalty on'): from Old French justifier, from Christian Latin justificare 'do justice to', from Latin justus (see just)

Spelling help
Remember that the ending of justify is spelled -ify.