See st for more
-st
-st /st/
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)
-st /st/
suffix1. forms written ORDINAL numbers with 1:
2. old use or biblical another form of the suffix -est(2):