• good-by, goodby (dated)
• good-bye
• good bye
• g'bye (colloquial)
• bye, 'bye (informal)

From earlier goodby, Godby, Godby'e, Godbwye, God b'w'y, God bwy yee, God buy you, God be wi' you, each a progressively shorter contraction of God be with ye or God be with you. Note the change of God to good by confusion with good morning, good night, etc. Modernly analysed as good +‎ bye.

• enPR: go͝odbīʹ, IPA^(key): /ɡʊdˈbaɪ/

  • Audio (UK):

    (file)

  • Audio (General American):

    (file)

• (General American) IPA^(key): /ɡədˈbaɪ/, /ɡəˈbaɪ/
• Rhymes: -aɪ
• Hyphenation: good‧bye

goodbye

1. Farewell; a formula used to another person or persons when the speaker, writer, or person addressed is departing.
   • 2016, VOA Learning English (public domain)

     Goodbye! - Goodbye, Anna.

• (formal): adieu, farewell
• (informal): bye, bye-bye, catch you later, mind how you go, see ya, see you, see you in the funny papers (US, informal, dated), so long, ta ta, tatty bye, toodeloo, toodles, TTFN, ttyl, tara
• (slang): buh-bye, cya, hasta la vista, later, laters, keep it real, peace, peace out, take it easy, catch you on the flip side
• adios, arrivederci, au revoir, do svidanya/do svidaniya, sayonara
• (UK, informal): cheerio, cheers, cheery-bye, toodle pip (dated)
• See also: Thesaurus:goodbye

• aloha
• ciao

• good night (during night)

• good riddance

• → Japanese: グッドバイ (guddobai), グッバイ (gubbai)
• → Afrikaans: koebaai (informal), baai (informal)

• see you later
• arrivederci, au revoir

• good afternoon, (at midday)
• good day (during day)
• good eve, good evening (during the evening)
• good morn, good morning (during the morning)

goodbye (plural goodbyes)

1. An utterance of , the wishing of farewell to someone.

   They made their good-byes.

   We have time for a short goodbye.

goodbye (third-person singular simple present goodbyes, present participle goodbying or goodbyeing, simple past and past participle goodbyed)

1. To say goodbye; to wish somebody farewell on parting.