The term 'formally attired' can be described by the crossword solutions of DRESSY (6 letters), inatie (6 letters), inasuit (7 letters), and intails (7 letters). DRESSY is an adjective that means wearing clothing that is appropriate for a formal occasion. Inatie is an adjective that means wearing a suit or other formal attire. Inasuit is an adverb that means wearing a suit or other formal attire. Intails is an adverb that means wearing a tailcoat, which is a type of formal evening wear. All of these words describe someone who is formally attired, meaning they are wearing clothing that is appropriate for a formal occasion.