look up any word, like darude - sandstorm:
 
1.
Being legit serious.
Yo man, back the fuck up, I'm legerious!
by DJ EXxorcIST June 07, 2013
 
2.
When one is legitimately serious about something or someone.
Matt is legerious about his cars and his sloots.
by schheell November 22, 2013