Let her rip

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Meaning

Allow a person or machine to proceed at full speed or force, or begin speaking and acting without restraint. Informal and energetic. The referent need not be female; 'her' is conventional, and modern speakers also use 'let it rip.' Regional use: American English, now broadly understood.

Origin

Let her rip is attested in American English by 1846. Here 'rip' draws on older senses of moving with slashing force or breaking out violently; an 1851 account even records Illinois volunteers using 'Let 'er rip!' as a joking battle cry. James Redding Ware's 1909 slang dictionary later attributed the command to Mississippi steamboat captains who risked bursting their boilers. Because that account appeared decades after the idiom and supplies no contemporary chain, the steamboat story should be treated as folklore rather than established history. 'Her' became conventional with machines and vehicles, while the phrase broadened to unrestricted speech and action.

Research Sources

  1. Let er rip Merriam-Webster
  2. Rip Online Etymology Dictionary
  3. Passing English of the Victorian Era Internet Archive scan of James Redding Ware's 1909 dictionary

Variants

  • Let 'er rip
  • Let the machine rip

Usage Examples

  • Once the road cleared, the driver opened the throttle and let her rip.
  • The chair gave Mara the microphone and told her to let her rip.
  • When the signal changed to green, the operator let the old press rip.

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