forever and a day(r = adv.all) forever - for a very long or seemingly endless time; "she took forever to write the paper"; "we had to wait forever and a day"

N  perpetuity, eternity, everness, aye, sempiternity, immortality, athanasia, interminability, agelessness, everlastingness, perpetuation, continued existence, uninterrupted existence, perennity, permanence (durability), perpetual, eternal, everduring, everlasting, ever-living, ever- flowing, continual, sempiternal, coeternal, endless, unending, ceaseless, incessant, uninterrupted, indesinent, unceasing, endless, unending, interminable, having no end, unfading, evergreen, amaranthine, neverending, never-dying, never-fading, deathless, immortal, undying, imperishable, perpetually, always, ever, evermore, aye, for ever, for aye, till the end of the universe, forevermore, forever and a day, for ever and ever, in all ages, from age to age, without end, world without end, time without end, in secula seculorum, to the end of time, to the crack of doom, to the 'last syllable of recorded time', till doomsday, constantly, esto perpetuum, labitur et labetur in omne volubilis oevum, but thou shall flourish in immortal youth, Eternity! thou pleasing, dreadful thought, her immortal part with angels lives, ohne Rast ora e sempre.

admission day, all day long, all fools' day, all saints' day, all souls' day, american indian day, annunciation day, april fools' day, arbor day, armed forces day, armistice day, ascension day, bastille day, bissextile day, boxing day, break of day, break of the day, by the day, calendar day, call it a day, candlemas day, childermas day, christian holy day, christmas day, citizenship day, civil day, clarence day, clarence shepard day jr., class day, columbus day, commencement day, commonwealth day, day, day after day, day bed, day blindness, day boarder, day book, day by day, day camp, day care, day care center, day game, day in and day out, day in day out, day jessamine, day laborer, day labourer, day lily, day nursery, day of atonement, day of judgement, day of judgment, day of reckoning, day of remembrance, day of rest, day of the month, day of the week, day off, day return, day school, day shift, day watch, decoration day, degree day, discovery day, dominion day, each day, easter day, election day, ember day, empire day, every day, fast day, father's day, feast day, fete day, field day, flag day, forever, future day, gain the day, good day, groundhog day, guy fawkes day, high holy day, holy day, holy day of obligation, holy innocents' day, inauguration day, independence day, innocents' day, jewish holy day, judgement day, judgment day, labor day, lady day, lammas day, last day, leap day, lord's day, lunar day, major fast day, market day, martin luther king day, may day, mean solar day, memorial day, michaelmas day, midsummer day, midsummer's day, minor fast day, mother's day, naked as the day one was born, naked as the day you were born, name day, natal day, new year's day, night and day, order of the day, pan american day, pancake day, patriot's day, patriots' day, pioneers' day, polling day, poppy day, present day, presidents' day, quarter day, rag day, rainy day, red-letter day, remembrance day, rest day, robert e lee day, rogation day, saint patrick's day, saint valentine's day, saint's day, school day, seize the day, sidereal day, six day war, solar day, speech day, st john's day, st martin's day, st patrick's day, st valentine's day, tag day, term day, texas independence day, thanksgiving day, three kings' day, time of day, transfiguration day, twelfth day, united nations day, unlucky day, v-e day, v-j day, valentine day, valentine's day, veterans day, veterans' day, victoria day, victory day, washing day, wedding day, work day, working day