carbonize — to turn or be turned into carbon as a result of heating, fossilization, chemical treatment, etc
circumcise — If a boy or man is circumcised, the loose skin at the end of his penis is cut off.
fertilize — Biology. to render (the female gamete) capable of development by uniting it with the male gamete. to fecundate or impregnate (an animal or plant).
formalize — to make formal, especially for the sake of official or authorized acceptance: to formalize an understanding by drawing up a legal contract.
harmonize — to bring into harmony, accord, or agreement: to harmonize one's views with the new situation.
herbicide — a substance or preparation for killing plants, especially weeds.
organize — to form as or into a whole consisting of interdependent or coordinated parts, especially for united action: to organize a committee.
urbanize — to make or cause to become urban, as a locality.
verbalize — to express in words: He couldn't verbalize his feelings.
Four-or-more syllable rhymes
commercialize — If something is commercialized, it is used or changed in such a way that it makes money or profits, often in a way that people disapprove of.
disorganize — to destroy the organization, systematic arrangement, or orderly connection of; throw into confusion or disorder.
immortalize — to bestow unending fame upon; perpetuate.
internalize — to incorporate (the cultural values, mores, motives, etc., of another or of a group), as through learning, socialization, or identification.
suburbanize — to give suburban characteristics to: to suburbanize a rural area.
Four-or-more syllable rhymes
depersonalize — To depersonalize a system or a situation means to treat it as if it did not really involve people, or to treat it as if the people involved were not really important.