compartmental — divided into compartments: a compartmental office; a compartmental agency.
continental — Continental means situated on or belonging to the continent of Europe except for Britain.
departmental — Departmental is used to describe the activities, responsibilities, or possessions of a department in a government, company, or other organization.
detrimental — Something that is detrimental to something else has a harmful or damaging effect on it.
florence fennel — a variety of fennel, Foeniculum vulgare azoricum, having enlarged leaf bases, which are blanched and used especially as an ingredient in salads.
fundamental — serving as, or being an essential part of, a foundation or basis; basic; underlying: fundamental principles; the fundamental structure.
governmental — the political direction and control exercised over the actions of the members, citizens, or inhabitants of communities, societies, and states; direction of the affairs of a state, community, etc.; political administration: Government is necessary to the existence of civilized society.
incidental — happening or likely to happen in an unplanned or subordinate conjunction with something else.
incremental — increasing or adding on, especially in a regular series: small, incremental tax hikes.
instrumental — serving or acting as an instrument or means; useful; helpful.
judgemental — involving the use or exercise of judgment.
monumental — resembling a monument; massive or imposing.
occidental — (usually initial capital letter) of, relating to, or characteristic of the Occident or its natives and inhabitants.
oriental — (usually initial capital letter) of, relating to, or characteristic of the Orient, or East; Eastern.
ornamental — used or grown for ornament: ornamental plants.
accidental — An accidental event happens by chance or as the result of an accident, and is not deliberately intended.
Four-or-more syllable rhymes
coincidental — Something that is coincidental is the result of a coincidence and has not been deliberately arranged.
developmental — Developmental means relating to the development of someone or something.
environmental — Relating to the natural world and the impact of human activity on its condition.
nongovernmental — the political direction and control exercised over the actions of the members, citizens, or inhabitants of communities, societies, and states; direction of the affairs of a state, community, etc.; political administration: Government is necessary to the existence of civilized society.
temperamental — having or exhibiting a strongly marked, individual temperament.
transcontinental — passing or extending across a continent: a transcontinental railroad.
unsentimental — expressive of or appealing to sentiment, especially the tender emotions and feelings, as love, pity, or nostalgia: a sentimental song.
Four-or-more syllable rhymes
intercontinental — between or among continents; involving two or more continents: intercontinental trade.
intergovernmental — involving two or more governments or levels of government.
pennell — Joseph, 1860–1926, U.S. etcher, illustrator, and writer.
phenol — Also called carbolic acid, hydroxybenzene, oxybenzene, phenylic acid. a white, crystalline, water-soluble, poisonous mass, C 6 H 5 OH, obtained from coal tar, or a hydroxyl derivative of benzene: used chiefly as a disinfectant, as an antiseptic, and in organic synthesis.