Meaning: impossible to repress or control; "an irrepressible chatterbox"; "uncontrollable laughter"
"That's what's the matter with Hannah's cat!" cheerfully chipped in the irrepressible Waldo.
He let his eyes rest on Alexey Alexandrovitch's feet, feeling that he might offend his client by the sight of his irrepressible amusement.
The lawyer's gray eyes tried not to laugh, but they were dancing with irrepressible glee, and Alexey Alexandrovitch saw that it was not simply the delight of a man who has just got a profitable job: there was triumph and joy, there was a gleam like the malignant gleam he saw in his wife's eyes.