irrespirable /ir-esˈpi-rə-bl or -i-spīˈ/

Unfit for respiration

• threnodist
• threnodists
• threnody
• threnos
• threonine
• threonines
• thresh
• threshed
• threshel
• threshels
• thresher
• threshers
• thresher-shark
• thresher whale
• thresher whales
• threshes
• threshing
• threshing floor
• threshing floors
• threshing machine
• threshing machines
• threshing mill
• threshings
• threshold
• threshold dose