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40th

40th

43 1.0
Number forty in a list or order
  • adjective
  • /ˈfɔrtiˌθ/
translation icon : cuadragésimo
  • Today is the 40th wedding anniversary of my mom and dad, the Becketts.
  • 40th anniversary
  • 40th birthday
  • 40th year

Examples

  • Your daughter bought you this last year for your 40th birthday.

    Academic text (2009)
  • In fact, we're celebrating our 40th year this year.

    Academic text (2016)
  • Now driving in the 40th and final position...

  • You know, this is our 40th year.

  • And home in time for our 40th wedding anniversary.

  • Pete is just talking to me about his 40th birthday party.

  • I LOVE Disney and my wife surprised me for my 40th birthday by taking our family there.

    Blog text (3)
  • Also, as a celebration of their 40th anniversary, Tribute Blend VIA was introduced in March 2011.

    Blog text (20)
  • The European Southern Observatory (ESO) celebrates its 40th birthday this year.

    Academic text (2002)
  • This weekend, we are hosting a big celebration for my 40th birthday.

Synonyms

fortieth
vs40th
4 1.0

Coming after thirty-nine others in a list

has identical meaning but refers to the ordinal written form

How Late

40th
43 1.0
30th
53 1.0
20th
375 1.0
tenth
35 1.0
first
7 1.0

Surface Forms

40th positive

Morphology

40th = 40 (transparent) = 40 + th

Regular ordinal formation from the numeral with the productive English ordinal suffix '-th', which is predictable for learners.

Etymology

40Th comes from the number forty plus the ending -th, a small part that turns a number into its place or order, just like in fifth or tenth. So 40th simply means 'in position forty' or 'the forty in a sequence'.