[ShamelessC]

> Perhaps it's an accent thing but "-us" in cactus is not the same sound as "-ice" in practice.

Indeed, it's an accent thing. In America at least, pronouncing "cactus" with an "is" or an "us" sound are both valid.

I think that given that the author provided a working definition, and your provided failure example is actually passing that definition (just only for the author's dialect), and given that you are now essentially trying to change the subject to "my definition of rhyme is the correct one"; well, you're just being...pedantic? argumentative? I'm not sure.