The term 'make sick' can be defined as causing physical or mental illness. The crossword solutions for this term are REVOLT (6 letters), REPEL (5 letters), DISGUST (7 letters), REPULSE (7 letters), NAUSEATE (8 letters), SICKEN (6 letters), BOTHER (6 letters), and UNNERVE (7 letters). All of these words refer to actions that can cause physical or mental illness, such as revolting, repelling, disgusting, repulsing, nauseating, sickening, bothering, and unnerving someone.