The Latin ancestor of abhorrence isn't all that different from today's word or its meaning — it comes from abhorrēre, which means "to shrink back from," and it became synonymous with loathing in the early 17th century. Note the similarity to the word horror — a good way to remember the word's meaning. The Polish physicist Joseph Rotblat knew the power of the word when he used it to refer to the "widespread instinctive abhorrence of nuclear weapons.”