psych, psycho
mind, mental
pugn, pugna, pung
to fight
pul
urge
purg
clean
put
think
pyr, pyro
fire, heat
quad, quadr, quadri
four
quart
fourth
quin, quint
five, fifth
radic, radix
root
radio
radiation, ray
ram, rami
branch
re
again, back, backward
reg
guide, rule
retro
backward, back
rhin, rhino
nose
rhod, rhodo
red
rid
laugh
rrh, rrhea, rhoea, rrhag
flow, discharge
rub
red
rupt
break, burst
san
health
scend
climb, go
sci
know
scler, sclero
hard
scop, scope, scopy
see, examine, observe
scrib, script
write, written
se
apart
sect
cut
sed, sid, sess
sit