This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Similar to a swan

adj. Similar to that of a swan; as, a swanlike curve, swanlike beauty

adj. Beautiful like a swan

ad. In a swanlike way

ad. Beautifully like a swan

adj. Resembling a swan.

"She had regained her quiet assurance and stood now considering him, her head tilted slightly atop a neck that could only be described as swanlike."

cygnine   

swanny    cygneous    cygnean   

pleasure-dome    solidly-built    sharp-minded    sylphlike    finely-shaped