Word family noun expression expressiveness adjective expressive ≠ inexpressive expressionless inexpressible verb express adverb expressively expressionlessly inexpressibly
From Longman Dictionary of Contemporary Englishinexpressivein‧ex‧press‧ive /ˌɪnɪkˈspresɪv◂/ adjective EMOTIONALa face that is inexpressive shows no emotion 