The most common and most likely answer to this crossword clue is the 11 letter word TEETOTALLER
I've seen this crossword clue in The Times
T
E
E
T
O
T
A
L
L
E
R
More clues leading to the result TEETOTALLER
- Abstemious type stocktaking in golfing store?
- Kind of cross summer’s a dry one
- Abstainer, one calculating amount of Assam, do we hear?
- One is more unlikely to imbibe dram after endless beer?
- Lee and Al totter drunkenly — neither being this?
- Does Lipton statistician sound dry?
- Sports supporter, over the summer, getting no supper?
- Dry man, does he count all the holes, except the nineteenth, of course?
- A cart reversing into bank clerk, one on the wagon
Buddy explains!

The straight part
We know that "no supper" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case no supper = teetotaller.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TEETOTALLER mean?
TEETOTALLER noun- A person who completely abstains from alcoholic beverages.