Longman Dictionary English Word family noun expert expertise adjective expert ≠ inexpert adverb expertly ≠ inexpertly From Longman Dictionary of Contemporary Englishinexpertin‧ex‧pert /ɪnˈekspɜːt $ -ɜːrt/ adjective formal GOOD ATnot having the skill to do something OPP expert an inexperienced and inexpert teacher —inexpertly adverb ldoceonline.com