The term 'allay fears of' can be broken down into four crossword solutions: REASSURE (8 letters), ASSURE (6 letters), SOOTHE (6 letters), and EASE (4 letters). All of these words have similar meanings, but each has its own nuances. To 'REASSURE' someone is to give them confidence or courage, often by providing evidence that their fears are unfounded. To 'ASSURE' someone is to make a promise or guarantee that something will happen, which can help to reduce fear. To 'SOOTHE' someone is to calm them down, often by providing comfort or reassurance. Finally, to 'EASE' someone's fears is to reduce the intensity of their worries, often by providing a distraction or taking away the source of the fear.