The term 'set to rights' can be broken down into four crossword solutions: MEND (4 letters), FIX (3 letters), EMEND (5 letters), and READJUST (8 letters). All of these words refer to the act of repairing or correcting something that is broken or incorrect. MEND and FIX are both verbs that mean to repair or restore something to its original condition. EMEND is a verb that means to make corrections or revisions to a text. Finally, READJUST is a verb that means to make minor changes or adjustments to something. All of these words can be used to describe the act of setting something to rights.