-ST


Meaning of -ST in English

-st /st/ BrE AmE suffix

1 . forms written ORDINAL numbers with 1:

the 1st (=first) prize

my 21st birthday

2 . old use or biblical another form of the suffix ↑ -est (2):

thou dost (=you do)

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.