Sentence:  The problem of usage comes in for <WSD>abhorrer</WSD> in various ways: There are 63 entries with the root abhor, including 3 <WSD>abhorrer</WSD>, 17 abhorrence. 
Meaning of the word marked with <WSD> tags:  One who abhors. (Early 17th century.)<ref name=SOED>(page=4)</ref>