| verb | be undecided about something; waver between conflicting positions or courses of action “He oscillates between accepting the new position and retirement” |
| verb | move or sway in a rising and falling or wavelike pattern “the line on the monitor vacillated” |
| vacillant | adjective | uncertain in purpose or action |
| vacillation | noun | indecision in speech or action |
| vacillator | noun | one who hesitates (usually out of fear) |
| oscillation | noun | the process of oscillating between states |
| fluctuation | noun | a wave motion |
| waver | noun | the act of moving back and forth |
| wavering | noun | the quality of being unsteady and subject to changes |