INEXPERT
amateurish, amateur, inexpert, unskilled
(adjective) lacking professional skill or expertise; “a very amateurish job”; “inexpert but conscientious efforts”; “an unskilled painting”
Source: WordNet® 3.1
Etymology
Adjective
inexpert (comparative more inexpert, superlative most inexpert)
Inept or unskilled; not of expert ability or quality.
Synonyms: amateurish, clumsy, bungling, maladroit
Antonyms: adept, proficient, professional, skillful
Noun
inexpert (plural inexperts)
An inept or unskilled person.
Source: Wiktionary
In`ex*pert", a. Etym: [L. inexpertus inexperienced: cf. F. inexpert.
See In- not, and Expert.]
1. Destitute of experience or of much experience. [Obs.] Milton.
2. Not expert; not skilled; destitute of knowledge or dexterity
derived from practice. Akenside.
Source: Webster’s Unabridged Dictionary 1913 Edition