Usage Note
Indeseable functions both as an adjective ('undesirable') and as a noun referring to a person considered undesirable or unworthy ('an undesirable'). The noun use carries a dismissive or pejorative tone. Like all -ble adjectives, it is gender-invariable but takes the regular plural indeseables.
Examples
"Esa conducta es completamente indeseable."
Natural Translation
That behavior is completely undesirable.

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