Synonyms of deficient in English:

deficient


See definition of deficient

adjective

1‘his diet is deficient in vitamin A’

SYNONYMS

lacking, wanting, defective, inadequate, insufficient, limited, poor, scant

short of, short on, low on, with an insufficiency of, with too few ..., with too little ...

informal strapped for, pushed for

ANTONYMS

excessive

2‘on all levels, this is deficient leadership’

SYNONYMS

defective, faulty, flawed, inadequate, imperfect, impaired, shoddy, scrappy, sketchy, weak, inferior, unsound, substandard, second-rate, poor, shabby, incomplete, leaving much to be desired

informal duff

ANTONYMS

perfect