dope up vs dope

dope up is not a noun while dope is a noun.

Word	Noun	Adjective	Verb	Adverb
dope up	No	No	Yes	No
dope	Yes	No	Yes	No

As verbs, dope up and dope are synonyms defined as:

dope up (noun)	dope (noun)
	street names for marijuana
	slang terms for inside information
	carbonated drink flavored with extract from kola nuts
	an ignorant or foolish person

dope up (verb)	dope (verb)
give a narcotic to	give a narcotic to
	add impurities to (a semiconductor) in order to produce or modify its properties
	take drugs to improve one's athletic performance