Resembling, characteristic of, or typical of a goblin; playfully or devilishly mischievous.
Formed from 'goblin' plus the common English suffix '-ish' (meaning 'somewhat like' or 'having the quality of'). This is the most straightforward way to create adjectives in English.
The '-ish' suffix is incredibly flexible—you can add it to almost any noun to make it an adjective ('childish,' 'foolish,' 'selfish'), which is why English kids naturally understand new '-ish' words even if they've never heard them before!
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