The crossword solutions for the term 'ISN'T ONESELF?' are ACTS and AILS. The phrase 'ISN'T ONESELF?' is often used to describe someone who is not acting like themselves, usually due to illness or distress. ACTS is an acronym for 'Acts of the Apostles, ' which is a book in the New Testament of the Bible. AILS is a verb meaning to suffer from an illness or ailment. Therefore, the two crossword solutions together suggest that someone is not acting like themselves because they are ill.