Synonym all in the Collins English Dictionary & Thesaurus

all
adj

1 every bit of, the complete, the entire, the sum of, the totality of, the total of, the whole of

2 each, each and every, every, every one of, every single

3 complete, entire, full, greatest, perfect, total, utter
n

4 aggregate, entirety, everything, sum, sum total, total, total amount, totality, utmost, whole, whole amount
adv

5 altogether, completely, entirely, fully, totally, utterly, wholly

all-important
central, consequential, critical, crucial, essential, key, momentous, necessary, pivotal, significant, urgent, vital

all-out
complete, determined, exhaustive, full, full-on  (informal) full-scale, maximum, optimum, outright, resolute, supreme, thorough, thoroughgoing, total, undivided, unlimited, unremitting, unrestrained, unstinted, utmost

Antonyms
careless, cursory, half-hearted, negligent, off-hand, perfunctory, unenthusiastic

all-powerful
almighty, omnipotent, supreme

Antonyms
helpless, impotent, powerless

all right
adj

1 acceptable, adequate, average, fair, O.K. or okay (informal) passable, satisfactory, so-so (informal) standard, unobjectionable, up to scratch (informal)

2 hale, healthy, out of the woods, safe, sound, unharmed, unimpaired, uninjured, well, whole
adv

3 acceptably, adequately, O.K. or okay  (informal) passably, satisfactorily, unobjectionably, well enough

Antonyms
,   adj

1 bad, inadequate, not good enough, not up to scratch (informal) objectionable, poor, unacceptable, unsatisfactory

2 ailing, bad, ill, injured, off colour, out of sorts, poorly, sick, sickly, unhealthy, unwell

cure-all
catholicon, elixir, elixir vitae, nostrum, panacea

free-for-all
affray (Law) bagarre, brawl, donnybrook, dust-up (informal) fight, fracas, melee or mêlée, riot, row, scrimmage, shindig (informal) shindy (informal)

know-all
clever-clogs (informal) clever Dick (informal) smart aleck (informal) smartarse (slang) smarty (informal) smarty-boots (informal) smarty-pants (informal) wiseacre, wise guy (informal)