Word.ws English Dictionary

yst

yst is the abbreviation of yesterday.

Meaning of yesterday

Adverb

yesterday (not comparable)

  1. On the day before today.
    • I started to watch the video yesterday, but could only finish it this evening.
    Synonyms:
    the last day
    Antonyms:
    tomorrow
  2. (informal) As soon as possible.
    • I want this done yesterday!

See all 4 meanings of yesterday

Noun capitalized: YST

YST (plural YSTs)

  1. (abbreviation, initialism) Initialism of yolk sac tumor.

Proper noun capitalized: YST

YST

  1. (abbreviation, initialism) Initialism of Yukon Standard Time.

Forms of yst

pluralYSTs

Questions about yst

What is yst the abbreviation of?
Yst is the abbreviation of yesterday.
What part of speech is yst?
Yst can be a noun or a proper noun.
What is the plural of yst?
The plural of yst is YSTs.

Words near yst in the dictionary

  1. ysought
  2. ysowen
  3. ysprong
  4. YSRCP
  5. YSS
  6. yst
  7. yst.
  8. Ystad
  9. Ystalyfera
  10. ysterbos
  11. Ystrad

Source and license

Adapted from Wiktionary: yst (page history and authors); YST (page history and authors); yesterday (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “yst.” Word.ws, https://word.ws/yst. Based on Wiktionary, CC BY-SA 4.0.