Nouns can be used as intransitive verbs meaning 'to be X'. These can occur both actively and passively.

aš n. tea
ædir n. market
æka p. negative
esar v. serve
far n. good
færgas n. intelligent
goþ n. young
hirgas n. unintelligent
hõr n. bad
lars v. see
nevren n. yesterday
rain n. boy
regen v. kiss
sõre v. drink
Turz n. Turkey
ud v. help
veld v. grow
ver n. man
yep p. affirmative