The term 'additions' can be broken down into five different crossword solutions: RIDERS (6 letters), ANNEXES (7 letters), Ands (4 letters), ELLS (4 letters), and Sums (4 letters). RIDERS are people who join a group or organization, usually for a specific purpose. ANNEXES are additional buildings or sections that are added to an existing structure. Ands are conjunctions used to connect two words, phrases, or clauses. ELLS are units of measurement used to measure the length of something. Finally, sums are the result of adding two or more numbers together.