The term 'show subservience' can be expressed by two crossword solutions: 'KNEEL' (5 letters) and 'GROVEL' (6 letters). Kneeling is a gesture of respect, submission, or supplication, often done in religious contexts. Groveling is a more extreme form of submission, usually involving crawling on the ground or prostrating oneself. Both actions are used to demonstrate humility and obedience to someone in a position of authority.