unimpressed, unmoved, disappointed by lack of cerebral prowess or performance, failure to meet expectations, failure to provide evidence to support arguments
Boyfriend: So what do you think of that birthday gift I got you? You’re speechless I bet!
Girlfriend: Actually, the Alaskan timeshare has me uhmderwhelmed.
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.
Brad: "Heeeeeyyyy Becky. I'm surprised you got up so early with our (wink) late night...."
Becky: "meh, last night was pretty underwhelming". I'm off to the gym!
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.