inefficient 

The word used to describe a lazy ass coworker who sits around on his cell phone all day who to tries to call his boss inefficient.

Dang bro, can you stop being inefficient and do some work.

inefficient by brah12 September 7, 2016

Mentally Inefficient 

A vary slow thinking or dumb human being that either does something or says stupid things.

Bro this guy/girl is Mentally Inefficient

Mentally Inefficient by The Duke of farts and knocking June 12, 2024

Mentally Inefficient 

A really stupid human (Male/Female) that does or says painfully dumb things.

Bro that guy is so Mentally Inefficient

Mentally Inefficient by The Duke of farts and knocking June 12, 2024

insufficient 

not sufficient, not enough

he is feeling drowsy now because he had insufficient oxygen in this stuffy room.

insufficient by sjunemyself May 8, 2005

Insufficient Other 

A partner whose funds are lacking to pay their bills.

I got rid of my insufficient other. He was draining my bank account.

Insufficient Other by sdjackson13 April 27, 2015

Insufficiently intelligent 

A stupid person or just being dumb in general

The boy declared that his girlfriend was INSUFFICIENTLY INTELLIGENT

Insufficiently intelligent by That White Guy May 25, 2012

Insufficient Funds 

When you can't pay for your prostitute.

Insufficient Funds!

Insufficient Funds by Fazzzz88686 December 8, 2014