фантастичен означава в английски

dreamlike▼(like something from a dream)
adjective
[UK: ˈdriːm.laɪk] [US: ˈdriːm.ˌlaɪk]

fanciful▼(imaginative or unreal)
adjective
[UK: ˈfæn.sɪ.fəl] [US: ˈfæn.sə.fəl]

fantastic▼(existing in or constructed from fantasy)
adjective
[UK: fæn.ˈtæ.stɪk] [US: fæn.ˈtæ.stɪk]