| A | B |
| House | audience |
| Ingenue | young girl playing love interest |
| In the red | losing money on show |
| Interview audition | audition, opposite of cattle-call |
| Jury | first-night audience |
| Juvenile | player of youthful male roles |
| Improvisation | short bit with lines and action created by actor. Often used as rehearsal exercise |
| Improvise | lines and action, often needed to cover |
| Kill | to eliminate a piece of scenery or property from set, or to black out the lights |
| Knockout | sure-fire hit |
| Lead | actor playing the most prominent or important part |
| Levels | acting areas placed higher than stage level |
| Lines | speeches of the play |
| Masque | early dramatic presentation of mythology |
| Milk it dry | squeeze the most laughs from a line or expression |
| Mime | use of gestures and actions rather than words |
| Monologue | protracted speech by one person |
| Notices | reviews, clippings, dramatic criticism |
| Offstage | area of stage not enclosed by the set |
| Onstage | of stage enclosed by set and visible to the audience |
| Open up | turn more toward audience |
| Outfront | area occupied by audience |
| Overlap | picking up cue before previous speaker has finished |
| Pace | timing of lines and action |
| Paces | steps as “Move two paces down right” |