(of a person, behaviour, principles etc) having a regular pattern

constant, regular

going on all the time

fixed

being the same in size, amount, number, degree, value etc

alike

that cannot be reversed or revoked

irrevocable

final and unalterable

fixed, unchangeable

having, using, only one colour

fixed

not expected to change; going on for a long time; intended to last

constant, lasting

stiff; that cannot be bent; firm; strict; not changing

stiff, strict, severe

(of surface) level or polished, like glass; calm and free from uncomfortable movement; (of a liquid mixture) free from lumps

level, unwrinkled; flowing

firm; not likely to move or change; a building in which horses are kept and fed; a number of horses (especially racehorses) belonging to one particular owner

constant, fixed; resistant

without a bend or curve; level; even; upright; continuous; in good order; (of a person, behaviour, performance) honest; serious; (of alcoholic drink) without anything added; immediately

aligned; not curved

accurate

accurate

never coming to an end

certain, unchanging

not varying in form, quality etc

consistent