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Grade 1 Vocabulary Words (3,305)

Grade 1 vocabulary words build on kindergarten foundations. These words help first graders develop reading fluency and comprehension skills.

open
opened
opossum
or
ora
orang
orange
orc
orchard
ore
ork
orn
orphan
orphanage
other
otter
ouch
our
ours
ourselves
ouse
out
outdoor
outdoors
outside
oval
oven
over
overalls
owch
owe
owen
owl
owlet
own
owner
ox
oxygen
p
pa
pac
pacifier
pack
package
pad
page
paid
paijama
pail
pain