Longman Dictionary of Contemporary English homepage

-st

 suffix
     
Related topics: Numbers
-st
1HMN forms written ordinal numbers with 1:
the 1st (=first) prize
my 21st birthday
2 old use or biblicalXX another form of the suffix -est (2):
thou dost (=you do)
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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