pattern - What is a Beecumming Word™?

_{This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.}

If a word conforms to a special rule, I call it a Beecumming Word™.

Use the following examples below to find the rule.

And, if you want to analyze, here is a CSV version:

Beecumming Words™,Not Beecumming Words™
CENTAUR,JACKALOPE
EDUCATING,INFORMING

GLACIER,ICEBERG
INTEGRALS,DERIVATIVES
MASTERING,PRACTICING
MIRACLES,WONDERS
MISCREANT,VAGABOND
SCREWING,HAMMERING
SECLUDED,HIDDEN
STRANGLED,CHOKED
TRIANGLE,HEXAGON
WETLANDS,SWAMP

WILDCAT,GRIZZLY
WRESTLING,FIGHTING

Answer

If you take the

Unique Letters from E. E. Cummings' full name (Edward Estlin Cummings)

then you get

acdegilmnrstuw

Which are the letters found in @Dr Xorile's answer as common letters! This means that the definition of a Beecumming Word™ is that it

is composed only of letters found in the name "Edward Estlin Cummings"