Resembling or characteristic of a baby; childish or infantile in behavior or appearance.
From English 'baby' (from Middle English 'babe,' of uncertain origin, possibly imitative) plus the suffix '-ish' (Old English origin meaning 'of, relating to, or resembling'). The suffix was commonly applied to create adjectives describing resemblance.
The '-ish' suffix is one of English's most productive word-forming tools—we can add it to almost anything to mean 'somewhat like' (reddish, foolish, ish itself!). This flexibility helped English adapt quickly as it absorbed words from other languages.
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