inaudible
adjective
[ ɪnˈɔːdɪb(ə)l ]
• unable to be heard.
• "inaudible pulses of high-frequency sound"
Similar:
unheard,
not heard,
out of earshot,
hard to hear,
hard to make out,
indistinct,
imperceptible,
faint,
muted,
soft,
low,
muffled,
stifled,
whispered,
muttered,
murmured,
mumbled,
Origin:
late Middle English: from late Latin inaudibilis, from in- ‘not’ + audibilis (see audible).
