The phrase "more riling" refers to something that is more aggravating or irritating. Synonyms for this phrase include "more annoying", "more vexing", "more provoking", and "more infuriating". These words can be used interchangeably to describe situations, events, or behaviors that are frustrating and agitating. Other synonyms for "more riling" include "more irksome", "more exasperating", "more bothersome", and "more irritable", which can be used to convey a similar mood or sentiment. Regardless of which synonym is chosen, the underlying tone is one of annoyance or anger, indicating that the object in question is particularly unpleasant or vexing.