adjective

able to be firmly relied on to happen or be the case.

it’s certain that more changes are in the offing

unquestionable,sure,definite,beyond question,not in question,not in doubt,beyond doubt,unequivocal,indubitable,undeniable,irrefutable,indisputable,incontrovertible,incontestable,obvious,patent,manifest,evident,plain,clear,transparent,palpable,unmistakable,conclusive,recognized,confirmed,accepted,acknowledged,undisputed,undoubted,unquestioned,unchallenged,uncontested,there are no two ways about it,as sure as eggs is eggs,very likely,bound,destined,predestined,fated,trusted,assured of doing something,nailed on,inevitable,assured,reliable,unavoidable,inescapable,automatic,bound to happen,sure to happen,unpreventable,inexorable,ineluctable,predictable,necessary,out of one’s hands,in the bag,dependable,trustworthy,sound,foolproof,tested,tried and tested,effective,efficacious,guaranteed,unfailing,infallible,unerring,sure-fire,sovereign

pronoun

some but not all.

certain of his works have been edited