If you want to send someone good wishes when parting ways at night or before going to sleep, good night is the standard spelling, whereas goodnight is an informal alternative.
You can use either goodnight or good night when you’re saying farewell to someone at the end of the evening. Learn the difference between these two spellings.
What could be sweeter than a thoughtful good-night message sent to your partner before bed? Sending goodnight wishes via text is a fantastic way to stay in touch with someone you love and show them you’re thinking of them, even if you can’t tell them so face-to-face.
The question “good night or goodnight?” is common because both forms appear everywhere—from novels and greeting cards to texts and social media. While the meaning is the same, the difference lies in formality.
Whether you’re saying goodnight to your boyfriend, girlfriend, best friend, or a beloved family member, this curated collection offers emotionally rich wishes designed to leave a lasting impression.
You say ' Goodnight ' to someone late in the evening before one of you goes home or goes to sleep.
goodnight (ˌɡʊdˈnaɪt) sentence substitute a conventional expression of farewell, or, rarely, of greeting, used in the late afternoon, the evening, or at night, esp when departing to bed
There are nine meanings listed in OED's entry for the word goodnight, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.