Er is a 2 letter English word. It's valid Scrabble word worth 2 points. It's valid Words with friends word worth 2 points.
You can make 5 anagrams from letters in er (er).
Middle English -er(e), a coalescence of Old English -ere agentive suffix (cognate with Old High German -āri, Gothic -areis Germanic *-arjaz (> Slavic *-arĭ) Latin -ārius Examples for er
er, um, because the people dying of Ebola in West Africa are black? An' they know it, too, by golly, er they wouldn't hang back like they're a-doin'. He first hit it big as Dr. Robert Caldwell on St. Elsewhere—the hospital heartthrob a decade before George Clooney did it on er. "You'd think I'd done it a-purpose to 'ear 'er," the driver mumbled. Wind's freshenin' from the east'rds, an' that'll 'old 'er back a bit, sir. Yer'd be positive o' passin' 'er if she didn't syle afore 'igh-tide. Fame came with er in the mid-1990s and Clooney's role as heart-throb doctor Doug Ross. But Avice is—er—my dear, she is like her mother in more ways than one. I was taken to the hospital by ambulance and sat in the er waiting room for what felt like days. The EU has said, since Haaretz broke the story, er, well, we have no such plans.