está riñendo
Present progressive él/ella/usted conjugation of reñir.

reñir

Siempre está riñendo con su novia por cosas insignificantes.
He's always rowing with his girlfriend about the most inconsequential things.
Pero siempre se lo toma todo a mal, siempre me está riñendo.
But she always takes it the wrong way and snaps at me. Do you know what she said the other day?
A Eva la está riñendo su madre y va y se pone a cantar.
Eva was being told off by her mother, and then she goes and begins to sing.
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