waver

Short definition from Wiktionary

Verb

1. 1
   To swing or wave, especially in the air, wind, etc.; to flutter.
2. 2
   To move without purpose or a specified destination; to roam, to wander.
3. 3
   To sway back and forth, as if about to fall; to reel, to stagger, to totter.
4. 4
   To begin to weaken or show signs of weakening in resolve; to falter, to flinch, to give way.
5. 5
   To feel or show doubt or indecision; to be indecisive between choices; to vacillate.
6. 6
   Of a body part such as an eye or hand, or the voice: to become unsteady; to shake, to tremble.
7. 7
   Of light, shadow, or a partly obscured thing: to flicker, to glimmer, to quiver.
8. 8
   Chiefly of a quality or thing: to change, to fluctuate, to vary.
9. 9
   Followed by from: to deviate from a course; to stray, to wander.
10. 10
    Of the wits: to become confused or unsteady; to reel.
11. 11
    To cause (someone or something) to move back and forth.
12. 12
    To cause (someone) to begin to or show signs of weakening in resolve; also (rare), to weaken in resolve due to (something).

Noun

1. 1
   An act of moving back and forth, swinging, or waving; a flutter, a tremble.
2. 2
   A state of beginning to weaken or showing signs of weakening in resolve; a falter.
3. 3
   A state of feeling or showing doubt or indecision; a vacillation.
4. 4
   One who waves their arms, or causes something to swing or wave.
5. 5
   A person who specializes in treating hair to make it wavy.
6. 6
   A tool used to make hair wavy.
7. 7
   In full waver roller: a roller which places ink on the inking table of a printing press with a back and forth, waving motion.
8. 8
   Synonym of waverer (“one who feels or shows doubt or indecision; a vacillator”).
9. 9
   A sapling or other young tree left standing when other trees around it have been felled.

Proper noun

1. 1
   A river in northern Cumbria, England, which flows into the Solway Firth.