Definite pronouns (noteiktie vietniekvārdi) refer to the whole of something or to each member of a group.
pats, pati
(one)self, the very
viss, visa
all, everything
katrs, katra
each, every
ikviens
everyone
abi, abas
both
Examples
Es pats to izdarīju.
I did it myself.
Viss ir kārtībā.
Everything is fine.
Abi brāļi dzīvo Rīgā.
Both brothers live in Riga.