Inveigh (against) is a term that means to express strong disapproval or criticism of someone or something. The crossword solutions for this term are DECLAIM (7 letters), RAIL (4 letters), and RAILAT (6 letters). DECLAIM means to speak out in a loud and forceful manner, usually in protest or condemnation. RAIL means to criticize harshly and publicly, often with angry or bitter words. RAILAT means to criticize or complain about someone or something in an angry or bitter way. All three terms are related to expressing strong disapproval or criticism.