Delta-wing is a term used to describe the shape of an aircraft wing. It is a type of wing design that is triangular in shape, with the leading edge forming a sharp point and the trailing edge sloping upwards towards the fuselage. However, there are several other synonyms for delta-wing that can be used to describe this type of wing design. Some of the possible options include arrowhead wing, triangle wing, swept wing or even simply triangular wing. Each of these synonyms can be used interchangeably with the term delta-wing, depending on the context and the specific aircraft being referred to.