Comparative form of dinky; smaller, more insignificant, or more cramped than something else.
From dinky (small, insignificant) + -er comparative suffix. Dinky itself likely comes from dink (small) with diminutive -y ending, popularized in 20th-century informal English.
The word 'dinky' exploded in British English during the 1960s to describe the new generation of compact cars and tiny city apartments, perfectly capturing postwar attitudes about space-saving design and affordability.
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