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indistinguishable

in·dis·tin·guish·a·ble

indistinguishable

pronunciation:
In dih stIng gwih sh bl
part of speech: adjective
definition 1: without distinguishing marks or characteristics.
The twins are indistinguishable from each other.
synonyms:
identical, same, twin
antonyms:
distinct, distinguishable
similar words:
alike, equivalent, one, similar, synonymous
definition 2: not readily perceived; imperceptible.
synonyms:
imperceptible, indiscernible
antonyms:
distinguishable
similar words:
indefinite, invisible, obscure, unnoticeable
derivations: indistinguishably (adv.), indistinguishability (n.)