The term 'remarkable thing' can be defined by four different crossword solutions: LULU (4 letters), PHENOMENON (10 letters), PIP (3 letters), and DILLY (5 letters). LULU is a female given name, derived from the Hawaiian word for 'PEARL'. PHENOMENON is a remarkable occurrence or event that is not easily explained. PIP is a nickname for Philip, which is a Greek name meaning 'lover of horses'. DILLY is an informal term for something remarkable or outstanding. Finally, ONER is a term used to describe something that is unique or extraordinary. All of these words can be used to describe a remarkable thing.