- Around four perform surgery on secret agent - Essential (point) - Exerting force - In force - Secret agent - Working in musical drama, I’ve appeared after final act - Having the power of acting; hence, exerting force,
physical or moral; active in the production of effects; as, an
operative motive.
- Essential (point) - Need - Requirement - something that is essential or very important rather than just desirable - The quality or state of being necessary, unavoidable, or
absolutely requisite; inevitableness; indispensableness. - The condition of being needy or necessitous; pressing
need; indigence; want. - That which is necessary; a necessary; a requisite;
something indispensable; -- often in the plural.
- First in importance - First in order of importance - Headmaster - Main - Most important to have a leader at school - School head - Highest in rank, authority, character, importance, or
degree; most considerable or important; chief; main; as, the principal
officers of a Government; the principal men of a state; the principal
productions of a country; the principal arguments in a case.