Antonyms of adj proficient

1 of 2 senses of proficient

Sense 1
adept, expert, good, practiced, proficient, skillful, skilful -- (having or showing knowledge and skill and aptitude; "adept in handicrafts"; "an adept juggler"; "an expert job"; "a good mechanic"; "a practiced marksman"; "a proficient engineer"; "a lesser-known but no less skillful composer"; "the effect was achieved by skillful retouching")

INDIRECT (VIA skilled) -> unskilled -- (not having or showing or requiring special skill or proficiency; "unskilled in the art of rhetoric"; "an enthusiastic but unskillful mountain climber"; "unskilled labor"; "workers in unskilled occupations are finding fewer and fewer job opportunities"; "unskilled workmanship")

Similarity of adj proficient

2 senses of proficient

Sense 1
adept, expert, good, practiced, proficient, skillful, skilful -- (having or showing knowledge and skill and aptitude; "adept in handicrafts"; "an adept juggler"; "an expert job"; "a good mechanic"; "a practiced marksman"; "a proficient engineer"; "a lesser-known but no less skillful composer"; "the effect was achieved by skillful retouching")
       => skilled (vs. unskilled) -- (having or showing or requiring special skill; "only the most skilled gymnasts make an Olympic team"; "a skilled surgeon has many years of training and experience"; "a skilled reconstruction of her damaged elbow"; "a skilled trade")

Sense 2
technical, proficient -- (of or relating to technique or proficiency in a practical skill; "his technical innovation was his brushwork"; "the technical dazzle of her dancing")