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v. Third-person singular simple present indicative form of ascertain.

"Zak quickly ascertains that the hose for the water filter has come undone, and has been squirting water down into the floor for some unknown but definitely significant length of time."

ascertained    ascertaining    ascertains   

test    refract    count    number    enumerate   

fix    determine    discover    learn    establish   

Alane    Aquitaine    Ayn    Bahrain    Biscayne