a book cover

necessary

going on all the time

fixed

clear; definite

certain, definite

that cannot be moved; not able, refusing to be affected or changed

fixed, stubborn

that cannot be destroyed

lasting, unable to be destroyed

that cannot be avoided; so frequently seed, heard etc that it is familiar and expected

certain; cannot be avoided

that cannot be reversed or revoked

irrevocable

final and unalterable

fixed, unchangeable

having, using, only one colour

fixed

not easily agreeing to an argument or being persuaded; stubborn

stubborn, determined

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

stiff, strict, severe

serious and strict; not kind; (of the weather, attacks of disease etc) strong, extreme; making great demands on skill, ability, patience etc

uncompromising, stern

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

not varying in form, quality etc

consistent