unefficient 

the ownage of a person who says unefficient isn't a word

jack has a unefficient pancreas

unefficient by trsjimbob July 13, 2011

Uhfficient 

1. Someone who pauses a lot when talking
2. Someone who is the opposite of efficient

1. Hi uh my name is uh is uh Gary
2. Gary is so uhfficient he never gets anything done

Uhfficient by BSTOLZ June 11, 2013

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