different between getup vs letup

English

get +? up

getup (plural getups)

(chiefly US, informal) A costume or outfit, especially one that is ostentatious or otherwise unusual.
- 1917 Oct. 28, "1,200 Reading Firemen March," Reading Eagle (Pennsylvania, USA), p. 4:
  The Schnitzelbank Band, each member attired in an odd getup, received many comments for the manner in which the men marched.
- 2009 June 8, "Worried They Will Miss the War: Inside the Mind of West Point's Class of 2009," Newsweek:
  [A] parade of costumed cadets trots by: a shark costume, an Uncle Sam getup and three young men in form-fitting bodysuits.
(informal) A fight or altercation.
- 2002 Jan. 28, Andrea Sachs, "Caricature Builder," Time:
  "A bully. Picked on fellows. He loved to fight. But I never saw him in a getup with a fellow his own size."
(publishing) Layout and production style, as of a magazine.
Alternative form of get-up-and-go

From the verb phrase let up.

letup (plural letups)

A pause or period of slackening.
We waited for a letup in the rain, then we ran home before it started again.

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