This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of or relating to a unit.

adj. Having the nature of a unit; whole.

adj. Based on or characterized by one or more units.

adj. Having the quality of oneness.

adj. Relating to a system of government in which sovereign power is concentrated in a single body instead of being shared or possessed by more local bodies.

adj. Pertaining to a unit.

n. A unitary council

n. A unitary operator

adj. Of or pertaining to a unit or units; relating to unity.

adj. Of the nature of a unit; not divided; united.

Of or relating to a unit; of the nature of a unit; not divided; entire: specifically noting in chemistry that system in which the molecules of all bodies are compared, as to their magnitude, with one molecule—water, for example—and all chemical reactions are as far as possible reduced to one typical form of reaction, namely double decomposition. Of or pertaining to, or characterized by, unity or uniformity; also, directed at or striving for unity: as, a unitary system of thought; in politics, centralized.

In biology, monistic, as distinguished from dualistic.

Pertaining to or of the nature of a unit (of measurement).

In mathematics, involving a root to unit power.

adj. relating to or characterized by or aiming toward unity

adj. characterized by or constituting a form of government in which power is held by one central authority

adj. having the indivisible character of a unit

adj. of or pertaining to or involving the use of units

"But you have a different view with regards to the role of the executive now, an enhanced role, what they called the unitary presidency."

united   

federalist   

unitariness    unitarity   

united    monadic    monadical   

homotopy    orthogonal    crystallographic    many-celled    relational    hierarchical    affine    quantitative    suppositional    protomatter