Synonyms of the word

orthogonal

• adj. (geometry) Of two objects, at right angles; perpendicular to each other.
• adj. (mathematics).
• adj. (statistics) Statistically independent, with reference to variates.
• adj. (software engineering) Of two or more aspects of a problem, able to be treated separately.
• adj. Of two or more problems or subjects, independent of or irrelevant to each other.

extraneous

• adj. Not belonging to, or dependent upon, a thing; without or beyond a thing; foreign.
• adj. Not essential or intrinsic.

immaterial

• adj. Having no matter or substance.
• adj. (law, accounting) So insubstantial as to be irrelevant.

impertinent

• adj. insolent, ill-mannered.
• adj. irrelevant (opposite of pertinent).
• n. An impertinent individual.

irrelevant

• adj. Not related, not applicable, unimportant, not connected.

perpendicular

• adj. (geometry) At or forming a right angle (to).
• n. (geometry) A line or plane that is perpendicular to another.
• n. A device such as a plumb line that is used in making or marking a perpendicular line.

rectangular

• adj. Having a shape like a rectangle.
• adj. Having axes that meet each other with right angles.

unrelated

• adj. not connected or associated.
• adj. not related by kinship.