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Meaning of unsubstitutably | Babel Free

Adverb CEFR C2

Definitions

Such that it cannot be substituted, or used as a replacement or alternative.

not-comparable

CEFR level

C2

Mastery
This word is part of the CEFR C2 vocabulary — mastery level.

See also

unsubtly unsuccessfully unsuccessively unsuccinctly unsuddenly unsufferably