Word family noun expression expressiveness adjective expressive ≠ inexpressive expressionless inexpressible verb express adverb expressively expressionlessly inexpressibly
From Longman Dictionary of Contemporary Englishinexpressiblein‧ex‧pres‧si‧ble /ˌɪnɪkˈspresəbəl◂/ adjective formal EXPRESSan inexpressible feeling is too strong to be described in words inexpressible gratitude —inexpressibly adverbExamples from the Corpus
inexpressible• And then, to her almost inexpressible joy, she saw the familiar tall, broad-shouldered figure across the station.• Looking up into his concerned brown eyes, I had felt an inexpressible sense of relief. 