The crossword solutions for the term 'THIS IS __ A TEST' are NOT (3 letters), ONLY (4 letters), EXAM (4 letters), and ASSAY (5 letters). The word NOT is used to indicate that something is not true or does not exist. ONLY is used to emphasize that something is the ONLY one of its kind. EXAM is a shortened form of the word examination, which is a formal test of knowledge or ability. Finally, ASSAY is a detailed analysis of a substance or material to determine its components. Together, these words form the phrase 'This is not ONLY an EXAM, but also an ASSAY'.