The term 'long suit' can be defined by the following crossword solutions: STRENGTH (8 letters), ASSET (5 letters), SPECIALTY (9 letters), FORTE (5 letters), METIER (6 letters), and unitard (7 letters). STRENGTH refers to physical or mental power, while an ASSET is something of value that can be owned. A SPECIALTY is a particular talent or skill, and a FORTE is an area of expertise. METIER is a French word meaning profession or trade, and a unitard is a one-piece garment that covers the torso and legs. All of these words refer to something that someone is particularly good at, which can be seen as their long suit.