dilettante vs dilettanteish

dilettante is a noun but dilettanteish is not a noun.

Word	Noun	Adjective	Verb	Adverb
dilettante	Yes	Yes	No	No
dilettanteish	No	Yes	No	No

As adjectives, dilettante and dilettanteish are synonyms defined as:

dilettante and dilettanteish: showing frivolous or superficial interest; amateurish

Other synonyms of dilettante include dilettantish, sciolistic.

dilettante (noun)	dilettanteish (noun)
an amateur who engages in an activity without serious intentions and who pretends to have knowledge

dilettante (adjective)	dilettanteish (adjective)
showing frivolous or superficial interest; amateurish	showing frivolous or superficial interest; amateurish