Dis-, -um-.
The prefix "dis-" denotes separation or scattering, as "Jxeti", to
throw; "disjxeti", to scatter. "Sxiri", to tear; "dissxiri", to tear
into bits. "Doni", to give; "disdoni", to distribute.
The suffix "-um-" has no definite meaning. It is used in only a few
words, of which the most important are:--
aerumi (from "aero", air), to expose to the air.
ventumi ( " "vento", wind), to fan.
kolumo ( " "kolo", neck), collar.
manumo ( " "mano", hand), cuff.
butonumi ( " "butono", button), to button.
gustumi ( " "gusto", taste), to taste (something).
komunumo ( " "komuna", common), a community.
krucumi ( " "kruco", cross), crucify.
malvarmumi ( " "malvarma", cold), take cold.
mastrumi ( " "mastro", master), keep house.
plenumi ( " "plena", full), fulfil.
brulumo ( " "bruli", burn), inflammation.
kalkanumo ( " "kalkano", heel), heel of boot.