conspicuous(noticeable or attracting attention, especially if unattractive) adjective [UK: kən.ˈspɪ.kjʊəs] [US: kən.ˈspɪ.kjuːəs]
impressive(making, or tending to make, an impression; having power to impress) adjective [UK: ɪm.ˈpre.sɪv] [US: ˌɪm.ˈpre.sɪv]
major(greater in significance or importance) adjective [UK: ˈmeɪ.dʒə(r)] [US: ˈmeɪ.dʒər]
notable(worthy of notice; remarkable) adjective [UK: ˈnəʊ.təb.l̩] [US: ˈnoʊ.təb.l̩]
noteworthy(worthy of attention) adjective [UK: ˈnəʊ.twɜː.ði] [US: ˈnoʊ.twɜː.ði]
outstanding(standing out from others) adjective [UK: ˌaʊt.ˈstænd.ɪŋ] [US: ˌɑːwt.ˈstænd.ɪŋ]It's outstanding. = È notevole.
remarkable(worthy of being remarked) adjective [UK: rɪ.ˈmɑːk.əb.l̩] [US: rə.ˈmɑːrk.əb.l̩]John is remarkable. = John è notevole.
significant(having noticeable effect) adjective [UK: sɪɡ.ˈnɪ.fɪkənt] [US: sɪg.ˈnɪ.fɪkənt]This candidate is significantly better compared to his predecessor. = Questo candidato è notevolmente migliore rispetto al suo predecessore.
substantial(most important; essential) adjective [UK: səb.ˈstæn.ʃl̩] [US: səb.ˈstæn.tʃl̩]Thanks to the opportunity, we were able to avoid substantial effort. = Grazie all'opportunità, siamo stati in grado di evitare notevoli sforzi.