The story
Blend of shrill + Hillary, likely to invoke the connotation of being loud, overbearing, and irrational that the word shrill may have when applied to women.
Etymology from Wiktionary, CC BY-SA 4.0.
Shrillary
Today it means: Hillary Clinton (born 1947), American politician and diplomat, former first lady (1993–2001) and secretary of state (2009–2013) of the United States. Full definition →