whistleless
Lacking shrill sound
Without a whistle, or unable to whistle.
A whistleless referee has forgotten essential equipment.
A whistleless kettle gives no audible signal when water boils.
Someone who is whistleless lacks the ability to produce the sound: He tried to get her attention but realized he was completely whistleless.
Producing no sound
soundproof · hushed · inaudible · stillness · muteness · speechless · wordless · toneless
Lacking learned skills
- breathlessLacking air, gasping
- pursedContracted into wrinkles
- lipsMouth's outer edges
- tone-deafCannot perceive pitch differences
unpracticed · unskilled · learning · attempting · frustrated · incapable · struggling · tutored
silent
Producing no sound
noiseless · soundproof · hushed · inaudible · stillness · muteness · speechless · wordless · toneless · unpierced
untrained
Lacking learned skills
- breathlessLacking air, gasping
- pursedContracted into wrinkles
- lipsMouth's outer edges
tone-deaf · unpracticed · unskilled · learning · attempting · frustrated · incapable · struggling · tutored · technique
referee
Sports rule enforcer
teapot · train · locomotive · steam · lanyard · electronic · signal · device · alarm · warning
whistle, whistling, whistles, whistled, wolf-whistle, whistler, tin whistle, dog whistle, steam whistle