Comparative form of ghosty; more ghost-like, pale, or eerie in appearance.
From 'ghost' + '-y' (making it an adjective) + '-er' (comparative suffix). Follows the pattern of 'scary/scarier' for short adjectives.
English has two ways to make comparatives—'ghosty/ghostier' (for short adjectives) and 'ghostly/more ghostly' (for longer ones), and choosing between them can change the feeling of a sentence.
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