petrify — to convert into stone or a stony substance.
rectify — to make, put, or set right; remedy; correct: He sent them a check to rectify his account.
satisfy — to fulfill the desires, expectations, needs, or demands of (a person, the mind, etc.); give full contentment to: The hearty meal satisfied him.
signify — to make known by signs, speech, or action.
simplify — to make less complex or complicated; make plainer or easier: to simplify a problem.
specify — to mention or name specifically or definitely; state in detail: He did not specify the amount needed.
testify — to bear witness; give or afford evidence.
Four-or-more syllable rhymes
electrify — Charge with electricity; pass an electric current through.
exemplified — Simple past tense and past participle of exemplify.
exemplifies — Third-person singular simple present indicative form of exemplify.
identify — to recognize or establish as being a particular person or thing; verify the identity of: to identify handwriting; to identify the bearer of a check.
indemnify — to compensate for damage or loss sustained, expense incurred, etc.