The term DECLARES TO BE TRUE can be expressed in three different ways using crossword solutions. ATTESTS (7 letters) means to affirm or verify something as true, often through the use of evidence or testimony. AVERS (5 letters) is an archaic term meaning to assert or declare something to be true. SAYSSO (6 letters) is a colloquial expression used to indicate that something is true. All three terms express the idea of declaring something to be true.