To screw up.
Greg tried to make dinner but he totally junked (it) up and burnt everything.
Dan junked up his elbow and shoulder learning to snowboard.
The acknowledgment of someone's failing to perform any given act, usually a mundane one.
Shae's attempt to provide an example for this word resulted in failsmanship because he junked it up so bad.
邮件由 firstname.lastname@example.org 发出。我们决不会发送垃圾邮件。