annulment — The annulment of a contract or marriage is an official declaration that it is invalid, so that legally it is considered never to have existed.
aqueduct — An aqueduct is a long bridge with many arches, which carries a water supply or a canal over a valley.
battlefront — the front line of a battle, where the action takes place
battlement — a parapet or wall with indentations or embrasures, originally for shooting through
cabinet — A cabinet is a cupboard used for storing things such as medicine or alcoholic drinks or for displaying decorative things in.
anti-calvinistic — the doctrines and teachings of John Calvin or his followers, emphasizing predestination, the sovereignty of God, the supreme authority of the Scriptures, and the irresistibility of grace. Compare Arminianism.
catalyst — You can describe a person or thing that causes a change or event to happen as a catalyst.
catapult — A catapult is a device for shooting small stones. It is made of a Y-shaped stick with a piece of elastic tied between the two top parts.
classicist — A classicist is someone who studies the ancient Greek and Roman civilizations, especially their languages, literature, and philosophy.
entangle — Cause to become twisted together with or caught in.
entangled — Simple past tense and past participle of entangle.
flatulent — generating gas in the alimentary canal, as food.
graduate — a person who has received a degree or diploma on completing a course of study, as in a university, college, or school.
halibut — either of two large flatfishes, Hippoglossus hippoglossus, of the North Atlantic, or H. stenolepis, of the North Pacific, used for food.
management — the act or manner of managing; handling, direction, or control.
panelist — a member of a small group of persons gathered for formal public discussion, judging, playing a radio or television game, etc.
passionate — having, compelled by, or ruled by intense emotion or strong feeling; fervid: a passionate advocate of socialism.
sacrament — Ecclesiastical. a visible sign of an inward grace, especially one of the solemn Christian rites considered to have been instituted by Jesus Christ to symbolize or confer grace: the sacraments of the Protestant churches are baptism and the Lord's Supper; the sacraments of the Roman Catholic and Greek Orthodox churches are baptism, confirmation, the Eucharist, matrimony, penance, holy orders, and extreme unction.
Four-or-more syllable rhymes
abandonment — The abandonment of a place, thing, or person is the act of leaving it permanently or for a long time, especially when you should not do so.
antagonist — Your antagonist is your opponent or enemy.
compassionate — If you describe someone or something as compassionate, you mean that they feel or show pity, sympathy, and understanding for people who are suffering.
contaminant — A contaminant is something that contaminates a substance such as water or food.
diaconate — the office, sacramental status, or period of office of a deacon
dispassionate — free from or unaffected by passion; devoid of personal feeling or bias; impartial; calm: a dispassionate critic.
inadequate — not adequate or sufficient; inept or unsuitable.
protagonist — the leading character, hero, or heroine of a drama or other literary work.
Four-or-more syllable rhymes
devil's advocate — If you play devil's advocate in a discussion or debate, you express an opinion which you may not agree with but which is very different to what other people have been saying, in order to make the argument more interesting.
line management — those managers in an organization who are responsible for the main activity or product of the organization, as distinct from those, such as transport, accounting, or personnel, who provide services to the line management
psychoanalyst — a person trained to practice psychoanalysis.
televangelist — an evangelist who regularly conducts religious services on television.
undergraduate — a student in a university or college who has not received a first, especially a bachelor's, degree.
Four-or-more syllable rhymes
cerebral aqueduct — The channel in the brain which connects the third ventricle to the fourth ventricle. It is surrounded by the periaqueductal gray.