långnga': (adjective/adverb) Agape, hold mouth agape.
Note: Most times this word is used to refer to a person being in a daze, acting lethargic, or even to mean "retarded."
"På'go ha' makmåta gue', ya fa'na'an långnga' gue'." = "She just woke up and it's like she's in a daze."
"Kalan lumålångnga' yo." = "It's like I'm in a lethargy."
"Måtan långnga' hao!" = "You look stupid!"
Sorry, I know it's not the nicest word, but I guess there are words like this in every language.