Synonyms for Remarkable (same or very similar meaning)
WordNet sense 1 (worthy of notice):
noteworthyWordNet sense 2 (important in effect or meaning):
important, significantWordNet sense 3 (unusual or striking):
singularWordNet sense 4 (beyond what is ordinary or usual; highly unusual or exceptional or remarkable):
extraordinaryFrom the ODE community, based on WordNetadd/edit