doldrums /dolˈdrəmz/

1. Those parts of the ocean near the equator where calms and baffling winds prevail (nautical)
2. A state of inactivity or stagnation
3. Low spirits

• soothfastnesses
• soothful
• soothing
• soothingly
• soothings
• soothlich
• soothly
• sooths
• soothsaid
• soothsay
• soothsayer
• soothsayers
• soothsaying
• soothsayings
• soothsays
• sootier
• sootiest
• sootily
• sootiness
• sootinesses
• sooting
• sootless
• soots
• sooty
• sooty mould