In the manner or style of a garden; characteristic of gardens or suitable for a garden setting.
From 'garden' plus the suffix '-ly' (in the manner of), derived from Old English 'lic' meaning 'like.' The '-ly' suffix can create both adverbs and adjectives, depending on context.
The '-ly' suffix is overloaded in English—'quickly' is an adverb, but 'lovely' and 'friendly' are adjectives! Our brains somehow know which is which without explicit rules.
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