oxalis — any plant of the genus Oxalis, comprising the wood sorrels.
populace — the common people of a community, nation, etc., as distinguished from the higher classes.
populous — full of residents or inhabitants, as a region; heavily populated.
prominence — Also, prominency. the state of being prominent; conspicuousness.
prophetess — a woman who speaks for God or a deity, or by divine inspiration.
provenance — place or source of origin: The provenance of the ancient manuscript has never been determined.
providence — a state of the NE United States, on the Atlantic coast: a part of New England. 1214 sq. mi. (3145 sq. km). Capital: Providence. Abbreviation: RI (for use with zip code), R.I.
romulus — the founder of Rome, in 753 b.c., and its first king: a son of Mars and Rhea Silvia, he and his twin brother (Remus) were abandoned as babies, suckled by a she-wolf, and brought up by a shepherd; Remus was finally killed for mocking the fortifications of Rome, which Romulus had just founded.
anomalous — Something that is anomalous is different from what is usual or expected.
anonymous — If you remain anonymous when you do something, you do not let people know that you were the person who did it.
autonomous — An autonomous country, organization, or group governs or controls itself rather than being controlled by anyone else.
homogenous — Biology. corresponding in structure because of a common origin.
homologous — having the same or a similar relation; corresponding, as in relative position or structure.
hydrolysis — chemical decomposition in which a compound is split into other compounds by reacting with water.
hypothesis — a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.
predominance — the state, condition, or quality of being predominant: the predominance of the rich over the poor.
recognizance — Law. a bond or obligation of record entered into before a court of record or a magistrate, binding a person to do a particular act. the sum pledged as surety on such a bond.
sarcophagus — a stone coffin, especially one bearing sculpture, inscriptions, etc., often displayed as a monument.
self-confidence — realistic confidence in one's own judgment, ability, power, etc.
synonymous — having the character of synonyms or a synonym; equivalent in meaning; expressing or implying the same idea.
Four-or-more syllable rhymes
antioxidant — An antioxidant is a substance which slows down the damage that can be caused to other substances by the effects of oxygen. Foods which contain antioxidants are thought to be very good for you.
heliopolis — Biblical name On. an ancient ruined city in N Egypt, on the Nile delta.
hippopotamus — a large herbivorous mammal, Hippopotamus amphibius, having a thick hairless body, short legs, and a large head and muzzle, found in and near the rivers, lakes, etc., of Africa, and able to remain under water for a considerable time.