Dry (4)
'dry' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for arid that I've seen before include "Very dry; uninteresting" , "Rainless (region)" , "flat" , "(Of land) very dry" , "(Of climate) dry" .)
'dry' is the definition.
(dehydrating is a kind of drying)
This is the entire clue.
(Other definitions for dehydrate that I've seen before include "Remove moisture content from, dry out" , "Drain" , "Preserve by removing all liquid from" , "Remove moisture from, make dry" , "Lose a lot of water" .)
'dry' is the definition.
(similar in meaning)
This is all the clue.
(Another definition for waterless that I've seen is " Arid".)
'dry' is the definition.
(I know that dry can be written as teetotal)
This is the entire clue.
(Other definitions for teetotal that I've seen before include "Taking no alcohol" , "Completely dry" , "drunk? No way" , "Not touching a drop" , "Abstaining completely from alcohol" .)
'dry' is the definition.
('dry' in French - used for wine)
This is all the clue.
(Other definitions for sec that I've seen before include "(Of wines) dry" , "sort of function" , "Jiffy" , "21 down, as wine" , "Dry, like wine" .)