teleurstellen meaning in English

disappoint [disappointed, disappointing, disappoints]▼(to displease by underperforming etc.)
verb
[UK: ˌdɪ.səˈpɔɪnt] [US: ˌdɪ.sə.ˌpɔɪnt]

let down▼(to disappoint)
verb
[UK: let daʊn] [US: ˈlet ˈdaʊn]

underwhelm [underwhelmed, underwhelming, underwhelms]▼(fail to impress)
verb
[UK: ˌʌndəwˈelm] [US: ˌʌndɚwˈelm]

disappointing▼(that disappoints or disappoint)
adjective
[UK: ˌdɪ.səˈpo.ɪnt.ɪŋ] [US: ˌdɪ.sə.ˌpɔɪnt.ɪŋ]