If you are asked a question or can not figure something out then it is said that you are "stumped" meaning you can go no further.
yes
Only one, because it is pronounced "stumpt".
perplexing beffudling confounding confusing mystifying puzzling
The magician, an expert at legerdemain, performed an intricate card trick that stumped the crowd.
We can't tell the difference between the "base" and the "width" of a triangle, so we're frankly stumped.
yes
Stumped can be both a verb (past tense of "stump") and an adjective, as in "I was stumped by the question."
Stumped - 2013 was released on: USA: 2014
"Stuck". To be stumped means to be unable to answer. "He was stumped by the test's hardest question".
The cast of Stumped - 2002 includes: Danny Nussbaum as Actor
The cast of Stumped - 2010 includes: Gino Nichele as Juma
understood
The tree said I'm stumped to the lumberjack.
The cast of Stumped - 2012 includes: Matthew Chamberlain as The Farmer Rangimoana Taylor as The Maori Man
Puzzled confounded stumped
"I'm stumped."
The cast of Stumped - 2007 includes: Ben Burrett Jessica Darnbrough Bethany Kennedy Danier Steiner