is (british|slang) a fictitious, highly infectious disease; often used in the phrase "the dreaded lurgi", sometimes as a reference to flu-like symptoms.
As an adjective surgy is
rising in surges or billows; full of surges; resembling surges in motion or appearance; swelling.
As adjectives the difference between surgy and surly
is that surgy is rising in surges or billows; full of surges; resembling surges in motion or appearance; swelling while surly is (obsolete) lordly, arrogant, supercilious.
As adjectives the difference between surfy and surgy
is that surfy is of a shore, having lots of breaking waves while surgy is rising in surges or billows; full of surges; resembling surges in motion or appearance; swelling.