" underwhelms "

 [ "underwhelmed" ]

1: unimpressed, unmoved, disappointed by lack of cerebral prowess or performance, failure to meet expectations, failure to provide evidence to support arguments

  * e.g.,  ... His performance did not wow me at all, I was totally underwhelmed. 

 [ "underwhelming" ]

1: The opposite of overwhelming. Usually uneventful and nothing special. Often associated with mediocrity.

  * e.g.,  ... Friend one: Hey have herd this new band called (shitty band name)? Friend two: No. Should I? Friend one: Nah, they're pretty underwhelming. 

 [ "underwhelmed" ]

1: Antonym of overwhelmed.

  * e.g.,  ... I was underwhelmed with the new vacation spot. 

 [ "Underwhelming" ]

1: Failure to impress or make an impression on a person or audience. Typically, the person performing the action believes they brought amazing skills and expertise to the table.

  * e.g.,  ... Brad: "Heeeeeyyyy Becky. I'm surprised you got up so early with our (wink) late night...."