The Dutch term "ris" matches the English term "series"

other dutch words that include "ris" : english :
actuaris actuary
aforisme aphorism
agrarisch farm, agricultural
Arisch Aryan
aristocraat aristocrat
Aristoteles Aristotle
Assyrisch Assyrian
asterisk asterisk
autoriseren authorize
berispen reproach, reprove
berisping remark, observation
Canarisch Canary
Cantabrisch Cantabrian
christen Christian
christendom Christianity
Christus Christ
commissaris commissar
crisis crisis, emergency
Dorisch Dorian, Doric
elektrisch electric
empirisch experimental
Eris Eris
Etrurisch Etrurian, Etruscan
fragmentarisch fragmentary
fris recent, fresh
frisse lucht toewaaien aerate
functionaris functionary
humoristisch humourous, humorous
hysterisch hysterical
Iberisch Iberian
inventaris inventory
Iris Iris
jurisdictie van een abt abbacy
jurist jurist
karakteriseren characterize
karakteristiek characteristic, distinctive
Krisjna Krishna
kristalhelder crystal
kristallen crystal
legendarisch legendary
missionaris missionary
motorisch motorial, locomotive
motoriseren motorize
notaris notary
opfrissen refresh
oprispen belch, burp
oratorisch oratorical
Osiris Osiris
Paris Paris
periscoop periscope
prisma prism
psychiatrisch psychiatric
riskant hazardous, risky
rissen deduct
rist rosary, series
salaris wage, wages, salary
Siberisch Siberian
symmetrisch symmetric
Syrisch Syrian
terrorisme terrorism
terrorist terrorist
Tigris Tigris
toerisme tourism
toerist tourist
totalitarisme totalitarianism
vegetarisch vegetarian
venerisch venereal
verfrissend refreshing