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hypopnea

noun

• breathing
• external respiration
• respiration
• ventilation

antonyms

• hyperpnea

sounds kind of like

• ha'penny
• hafnium
• happen
• havana
• have on
• haven
• heaven
• heavy weapon
• hipbone
• hoffman
• hoffmann
• hoop pine
• hop on
• hyphema
• hyphen
• hyponym
• hyponymy