Superlative form of 'drab': the most dull, dreary, or lacking in brightness and interest.
From 'drab' (adjective) plus the superlative suffix '-est'. Maintains the same etymology as 'drab', indicating absolute maximum dullness or dreariness.
Superlatives like 'drabbest' are rarely used in everyday speech—when people actually say this word, they're usually making a point about something truly, completely, utterly boring.
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