Antonyms of adj thundery

2 senses of thundery

Sense 1
deafening, earsplitting, thunderous, thundery -- (loud enough to cause (temporary) hearing loss)

INDIRECT (VIA loud) -> soft -- ((of sound) relatively low in volume; "soft voices"; "soft music")

Sense 2
thundery -- (accompanied with thunder)

INDIRECT (VIA stormy) -> calm -- ((of weather) free from storm or wind; "calm seas")

Similarity of adj thundery

2 senses of thundery

Sense 1
deafening, earsplitting, thunderous, thundery -- (loud enough to cause (temporary) hearing loss)
       => loud (vs. soft) -- (characterized by or producing sound of great volume or intensity; "a group of loud children"; "loud thunder"; "her voice was too loud"; "loud trombones")

Sense 2
thundery -- (accompanied with thunder)
       => stormy (vs. calm) -- ((especially of weather) affected or characterized by storms or commotion; "a stormy day"; "wide and stormy seas")