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

• tacked-on
• tacker
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• tackety
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• tackier
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• tackiest
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• tackiness
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• tacking
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• tackled
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• tack room
• tack rooms