Incorrect spelling, explanation:
51th is the incorrect abbreviation of the ordinal number fifty-first. When first, as long as second and third, is a part of an ordinal number we should use the appropriate ending, but not -th like in all other ordinal numbers. In the case of the fifty-first, the correct version is 51st and not 51th.
Correct spelling, explanation: 51st is the correct abbreviation of the ordinal number fifty-first. Ordinal numbers containing: first, second and third are exceptions, just like those first three ones. This means that the ending -th cannot be used in
51th, because first is a part of this ordinal number and the correct version is 51st.
Definition of 51st:
numeral: ordinal number between 50th and 52nd ;
I like cookbooks very much, and this one is 51st in my collection.
I am the 51st person in this line, I will probably spend the whole day waiting here!
✔ Click to open Free Grammar, Style and Spell Checker
Still not sure?Ask your question in our comments section below (we reply to all comments within 24 hours)
or return to main search.
6 thoughts on “51th or 51st”?
WhichIsCorrect.com takes no responsibility for all the incorrect language advice posted in the comments section below. Our moderators only check the spelling and punctuation of posted comments.
I was also confused, thank’s
I though both is correct.
Well, thanks for this..
so i was right.. its 51st.. hehehe
Adore it, that is a well backed info.
Hey I am for the first time on this site. I found it really useful & it helped me out a ton.