It is an adjective from the English language meaning ugly (a), disgusting, disgusting (a). Unpleasing to the eye, unpleasant to look at.
It is used as "ugly, unpleasant to see, offending morals". It surely comes from the Norse agg ("hate, rejection"), -like ("mode, as such"), which later evolved into the suffix -ly (to create adjectives).
It is not Spanish but English. See ingles/ugly ("ugly").
UGLY ugly , in English ugly face : bad face