dehydration

noun dehydration

• lack — something missing or needed: After he left, they really felt the lack.
• scarcity — insufficiency or shortness of supply; dearth.
• insufficiency — deficiency in amount, force, power, competence, or fitness; inadequacy: insufficiency of supplies.
• dearth — If there is a dearth of something, there is not enough of it.
• deficiency — Deficiency in something, especially something that your body needs, is not having enough of it.