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so long

so long

77 6.3
A casual word for goodbye used when leaving someone
  • idiom
  • /soʊ lɔŋ/
  • Informal
: adiós
  • It was nice meeting you, so long!

Examples

  • So long as we can find the right photographer.

  • Oh, Supernatural, I'm about to say goodbye, so long and thanks for all the fish.

    Blog text (29)
  • So long, Chip.

  • So long, y'all.

  • After our conversation, I waved and said, 'So long!'

  • With a smile, she turned to her friends and said, 'So long, everyone!'

Synonyms

see ya
vsso long
  • Texting
∞ 8.4

A friendly way to say goodbye when you expect to meet again

is casual but slightly less slangy than this phrase
goodbye
vsso long
∞ 1.0

Words people say when they leave each other

is more casual and conversational than this neutral farewell
bye
vsso long
  • Informal
306 1.0

A short word or action people use when they leave each other

is more informal and relaxed than this basic parting word
bye-bye
vsso long
  • Informal
279 1.1

A friendly informal way to say goodbye when leaving

is casual but more adult and less playful than this
good day
vsso long
  • Formal
131 1.0

A polite or formal way to say goodbye when parting

is more casual and informal than this polite departure phrase
good-bye
vsso long
59 1.0

Words or actions people use when they leave

is more informal and conversational than this standard term
good-by
vsso long
50 4.4

Words or actions people use when they leave each other

is less formal and more relaxed than that routine expression
adios
vsso long
  • Informal
34 7.2

A word people use to say goodbye

is more plain and native conversational in everyday speech
sayonara
vsso long
31 8.6

A goodbye used when someone leaves for a long time

is casual and usually implies a temporary parting rather than finality
adieu
vsso long
  • Literature
24 9.3

A final goodbye you say when leaving for a long time

is casual and used for ordinary brief partings rather than deep farewells
au revoir
vsso long
22 8.5

A polite way to say goodbye when you expect to see someone again

is more casual and less marked by foreign politeness
cheerio
vsso long
  • UK
17 8.9

A friendly way to say goodbye

is more neutral and broadly casual rather than distinctly warm
arrivederci
vsso long
11 9.8

A friendly way to say goodbye

is plainer and more commonly used in casual conversation
toodle
vsso long
  • Archaic
1 9.9

A playful word people use to say goodbye

is more plain and straightforward than this playful expression
goodby
vsso long
  • Archaic
1 3.0

A short phrase people say when they leave each other

is more casual and colloquial than this conventional expression
ta ta
vsso long
  • UK
8.7

A casual way to say goodbye to someone

is equally casual but slightly more neutral in tone
ta ta for now
vsso long
  • UK
9.5

A friendly informal way to say goodbye when you will see or speak to someone soon

is casual too but does not always imply a near reunion
auf wiedersehen
vsso long
9.8

A German phrase people use to say goodbye

is more plain and conversational than that borrowed formal phrase
9.9

A funny way to say goodbye when leaving a group

is simpler and used in everyday casual speech without irony
pip pip
vsso long
  • Archaic
9.9

A friendly old-fashioned British way to say goodbye

is more modern and commonly used in everyday casual speech

Antonyms

9 1.0

A short greeting you say when you meet someone or answer the phone

Surface Forms

so long singular
so longs plural

Morphology

so + long

Although the constituents 'so' (to such an extent) and 'long' (for a great length of time) are individually transparent, the use of 'so long' as an informal farewell is a conventionalized pragmatic meaning not directly deducible from the literal phrase. The literal sense ('for a long time') gives a partial clue linking to parting but does not reliably predict the goodbye function for a B1 learner without prior exposure.

Etymology

So long may come from an older use of the words so and long, which together meant 'for a long time' or 'until then'. People would say it like 'until we meet again', and it became a short, casual way to say 'goodbye'.