obedience

object

observatory

occasion

ocean

October

office

to operate

operation

optimism

ordinary

organism

to organize

to pacify

palace

panic

paper

to paralyze

park

part

to participate

patience

penguin

perfect

perfume

permanent

photograph

photographer

piano

pioneer

pirate

planet

planetarium

plan

plant

plate

police

practice

to practice

to prepare

to present

problem

professional

prudent

radio

really

remedy

to represent

restaurant

to retire

reunion

rich

rock

route

salary

secret

September

series

to simplify

socialist

sofa

solid

solidify

special

splendid

statistics

stomach

to study

stupid

support

surprise

telephone

telescope

television

to terminate

terrible

testimony

tomato

totally

tourist

traffic

to trap

triple

triumphant

trumpet

tube

uniform

to unify

university

urgency

usual

to utilize

vegetables

venomous

to verify

version

to visit

volleyball

to vote