Resembling or having the appearance of a castle; fortress-like or grand in architectural style.
Compound of castle and the suffix -like (Old English -lic, meaning 'of, similar to'). This is a productive modern English formation describing something that has castle-like qualities.
Medieval enthusiasts and fantasy lovers use 'castlelike' to describe everything from theme parks to actual historic houses—it's become code for 'impressively fortified' or 'romantically medieval' in casual speech.
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