| AMPUTATOR | • amputator n. The person who performs, or thing that causes, an amputation. • AMPUTATOR n. one who amputates. |
| ANNOTATOR | • annotator n. One who annotates. • ANNOTATOR n. one who annotates. |
| COGITATOR | • cogitator n. A person who cogitates; a thinker. • COGITATOR n. one who cogitates. |
| CUNCTATOR | • cunctator n. One who delays or lingers. • CUNCTATOR n. (Latin) someone who delays or procrastinates. |
| DILATATOR | • dilatator n. (Anatomy) A muscle that dilates any part; a dilator. • DILATATOR n. a muscle which dilates any part. |
| HESITATOR | • hesitator n. Alternative spelling of hesitater. • hesitator n. (Linguistics) A word, such as "er" or "um", expressing hesitation on the part of the speaker. • HESITATOR n. one who hesitates, also HESITATER. |
| IRRITATOR | • irritator n. One who or that which irritates. • IRRITATOR n. one who irritates. |
| LEVITATOR | • levitator n. One who, or that which, levitates. • LEVITATOR n. one who levitates. |
| MEDITATOR | • meditator n. One who meditates. • MEDITATOR n. one who meditates. |
| PUNCTATOR | • punctator n. One who marks with points, especially in writing Hebrew. • punctator n. (Taxonomy) Used attributively as a specific epithet; that marks with dots. • PUNCTATOR n. someone who marks something with dots, esp. applied to the Massoretes, who invented the Hebrew vowel points. |
| SCRUTATOR | • scrutator n. A person who scrutinizes or investigates. • SCRUTATOR n. one who investigates. |
| SPECTATOR | • spectator n. One who watches an event; especially, an event held outdoors. • SPECTATOR n. an onlooker. |
| TRACTATOR | • tractator n. (Historical) In medieval commerce, the person who handles or transports merchandise on behalf of an… • tractator n. A person who writes tracts. • tractator n. A Tractarian. |
| VISITATOR | • visitator n. (Catholicism) An apostolic visitor. • VISITATOR n. an official visitor. |