if the least wanted situation develops.

If worst comes to worst, we can ask Dad to send us some more money.

• aside from something
• a siege mentality
• as if own the place
• as if you own the place
• a sight for sore eyes
• a significant other
• a sign of the times
• a sine qua non
• a sinking feeling
• a sinking ship
• a sin tax
• as it comes
• as it stands
• a sitting duck
• a skeleton in closet
• a skeleton in cupboard
• a skeleton in someone's closet
• a skeleton in the closet
• a skeleton in the cupboard
• a skeleton in your cupboard
• ask for
• ask for a rain check
• ask for it
• ask for something
• ask for the moon