waver

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To move unsteadily back and forth. See Synonyms at swing.
2. v. To exhibit irresolution or indecision; vacillate: wavered over buying a house. See Synonyms at hesitate.
3. v. To become unsteady or unsure; falter: His resolve began to waver.
4. v. To tremble or quaver in sound, as of the voice or a musical note.
5. v. To flicker or glimmer, as light.
6. n. The act of wavering.

Century Dictionary and Cyclopedia

1. To move up and down or to and fro; wave; float; flutter; be tossed or rocked about; sway.
2. To quiver; flicker; glimmer; glance.
3. To falter; fail; reel; totter.
4. To be undetermined or irresolute; fluctuate; vacillate.
5. Synonyms and Vacillate. See fluctuate.
6. Hesitate, etc. See scruple.
7. To cause to wave or move to and fro; set in waving motion; brandish.
8. To demur or scruple about; hesitate at; shirk.
9. n. One who or that which waves; specifically, in printing, an inking-roller; an apparatus which distributes ink on the table or on other rollers, but not on the form of types: so called from its vibratory movement.
10. n. A sapling or timberling left standing in a fallen wood.

Wiktionary

1. v. intransitive To sway back and forth; to totter or reel.
2. v. intransitive To flicker, glimmer, quiver, as a weak light.
3. v. intransitive To fluctuate or vary, as commodity prices or a poorly sustained musical pitch.
4. v. intransitive To shake or tremble, as the hands or voice.
5. v. intransitive To falter; become unsteady; begin to fail or give way.
6. v. intransitive To be indecisive between choices; to feel or show doubt or indecision; to vacillate.
7. n. An act of wavering, vacillating, etc.
8. n. Someone who waves, enjoys waving, etc.
9. n. Someone who specializes in waving (hair treatment).
10. n. A tool that accomplishes hair waving.
11. n. UK, dialect, dated A sapling left standing in a fallen wood.
12. n. A darkwaver; a fan of darkwave music.

GNU Webster's 1913

1. v. To play or move to and fro; to move one way and the other; hence, to totter; to reel; to swing; to flutter.
2. v. To be unsettled in opinion; to vacillate; to be undetermined; to fluctuate.
3. n. Prov. Eng. A sapling left standing in a fallen wood.

WordNet 3.0

1. n. the act of moving back and forth
2. v. be unsure or weak
3. v. move or sway in a rising and falling or wavelike pattern
4. n. someone who communicates by waving
5. v. give off unsteady sounds, alternating in amplitude or frequency
6. v. pause or hold back in uncertainty or unwillingness
7. v. move back and forth very rapidly
8. v. sway to and fro
9. n. the act of pausing uncertainly
10. v. move hesitatingly, as if about to give way