ingrefficient 

An efficient ingredient that effectively amplifies a mechanism.

The only reason why you're inefficient is because you're lacking this one ingrefficient!

ingrefficient by Jon Leclerc March 31, 2021

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