dullen (0 synonym found)

We don't have any synonyms for dullen yet.

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Definition of dullen:

(v) : (transitive, nonstandard) To make dull or duller; to dull.
(v) : (intransitive, nonstandard) To become dull or duller; to dull.

Definition of dullen:

(v) : (transitive, nonstandard) To make dull or duller; to dull.
(v) : (intransitive, nonstandard) To become dull or duller; to dull.

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