Possible Clues:

• "That'll do!"
• That'll do if there's no huge mixture
• '......is as good as a feast'
• That'll do to get huge about a small number
• At first, exhibited almost nothing satisfying
• If it's huge on this, you don't want any more
• ` `A word to the wise is ......' '
• Middle of the quip, with 37-Across
• That's plenty for one hug
• That's what'll do to make it huge about the small number