13-letter words that end in onal
- informational — knowledge communicated or received concerning a particular fact or circumstance; news: information concerning a crime.
- inoperational — Not operational.
- inquisitional — Of or pertaining to an inquisition.
- inscriptional — Of or pertaining to inscription.
- inspirational — imparting inspiration.
- institutional — of, relating to, or established by institution.
- instructional — the act or practice of instructing or teaching; education.
- interactional — reciprocal action, effect, or influence.
- international — between or among nations; involving two or more nations: international trade.
- interneuronal — (neurology) Between neurons.
- interpersonal — of or pertaining to the relations between persons: He has strong interpersonal skills.
- interregional — of or relating to a region of considerable extent; not merely local: a regional meeting of the Boy Scouts.
- intranational — within one nation; occurring or existing within a nation's boundaries.
- intrapersonal — existing or occurring within the self or within one's mind: People with high intrapersonal intelligence are aware of their strengths and weaknesses. Intrapersonal conflict can lead to emotional stress.
- intraregional — Within a region.
- macrodiagonal — the longer of two diagonals
- main diagonal — a diagonal line or plane.
- malfunctional — Not functioning as intended.
- metafictional — Of, relating to, or being metafiction.
- multinational — a large corporation with operations and subsidiaries in several countries.
- multiregional — of, relating to or involving several regions
- neurohormonal — pertaining to or controlled by a neurohormone.
- non-emotional — pertaining to or involving emotion or the emotions.
- noncreational — Not creational.
- nondivisional — Not divisional.
- nonfunctional — Not having any particular purpose or function.
- nonrelational — Not relational.
- nonvocational — not relating to a particular job or profession
- observational — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- orientational — Of or pertaining to orientation.
- orthodiagonal — the axis in a crystal
- oscillational — characterized by oscillation
- over-rational — agreeable to reason; reasonable; sensible: a rational plan for economic development.
- overemotional — pertaining to or involving emotion or the emotions.
- ovipositional — pertaining to the laying of eggs through an ovipositor
- postulational — to ask, demand, or claim.
- prefunctional — of or relating to a function or functions: functional difficulties in the administration.
- prepositional — any member of a class of words found in many languages that are used before nouns, pronouns, or other substantives to form phrases functioning as modifiers of verbs, nouns, or adjectives, and that typically express a spatial, temporal, or other relationship, as in, on, by, to, since.
- prevocational — of, relating to, or constituting preliminary vocational training.
- prevolitional — the act of willing, choosing, or resolving; exercise of willing: She left of her own volition.
- procreational — having the potential to procreate
- progressional — the act of progressing; forward or onward movement.
- propositional — the act of offering or suggesting something to be considered, accepted, adopted, or done.
- provocational — the act of provoking.
- punctuational — punctuated equilibrium.
- quindecagonal — (geometry) Shaped like a quindecagon; fifteen-sided.
- recognitional — an act of recognizing or the state of being recognized.
- segregational — the act or practice of segregating; a setting apart or separation of people or things from others or from the main body or group: gender segregation in some fundamentalist religions.
- septentrional — northern; boreal
- supernational — tending to involve, or extending authority over, more than one nation; international; supranational.