The term 'overly formal' can be described by the following crossword solutions: PRIM (4 letters), STILTED (7 letters), STARCHY (7 letters), and ISRAELI (7 letters). PRIM means excessively proper or correct, while STILTED refers to an unnatural or forced formality. STARCHY implies a stiff or rigid formality, and ISRAELI suggests a very formal or ceremonious manner. All of these words describe a situation that is overly formal, where people are behaving in a way that is too proper or rigid.