Synonym word of on rare occasions:

almost never, barely, extra, extraordinarily, extremely, finely, hardly, hardly ever, infrequently, little, notably, now and then, on rare occasions, once in a while, once in blue moon, remarkably, scarcely ever, seldom, singularly, uncommon, uncommonly, unfrequently, unoften, unusually


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Synonyms:  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Popular