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slang.fyi

void of course

/vɔɪd əv kɔːrs/

Rare

The period when the moon makes no more major aspects before leaving its current sign, said to be a bad time to start anything new or make important decisions.

A niche concept even among astrology followers. People who track void of course moons are often more serious about the practice. Used both sincerely and as ironic shorthand for explaining why something failed.

Real-world examples4 examples
#ExampleWhat it meansSource
01i texted him during void of course. zero response. should have waitedSending a message during the void period is blamed for the lack of response.x, 2024
02the moon is void of course until 4pm, i'm not making any decisions before thatThe speaker is deliberately waiting for the void period to pass before acting.tiktok, 2023
03they announced the product launch under a void of course moon and it bombed on day one. i am not shockedPoor launch timing (astrologically) is cited as a contributing factor to a product's failure.reddit
04if you don't check whether the moon is void of course before signing anything are you even tryingTreating void of course checks as a baseline practice anyone serious about astrology should follow.instagram, 2024

Use it when

  • Warning against starting something or making decisions during the lunar void period.
  • Explaining retroactively why something launched or decided felt flat or went nowhere.
  • Checking whether the current moment is astrologically favorable before acting.

Do not use it when

  • You mean Mercury retrograde or any other retrograde planet.Use “mercury-retrograde” instead.
  • You just mean the timing was bad in a general sense.

Variations and related forms

void moon

Shortened version of void of course moon.

Void of course vs Mercury retrograde

void of course

Void of course is a short recurring lunar window, lasting hours, when starting new things is inadvisable.

VS

mercury-retrograde

Mercury retrograde is a weeks-long period associated with communication and tech chaos.

Origin and context

A concept from traditional Western astrology used by practitioners for centuries to time decisions. Entered internet vocabulary as moon cycle tracking became popular in astrology communities online.

First seen
2010s
Confidence
medium

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https://slang.fyi/void-of-course
Updated: 2026-08-28License: CC BY 4.0

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