1. someone who is squeaky clean is completely good and honest and never does anything bad.

Journalists have been trying to discover whether the Senator really is as squeaky clean as he claims to be.

2. completely clean.

I love the squeaky clean feel of my hair after I've washed it.

• and then some
• an eager beaver
• an eagle eye
• an early bath
• an early bird
• a near miss
• an earth mother
• an easy ride
• a necessary evil
• an educated guess
• a needle in a haystack
• go round in circles
• go round the houses
• gory details
• go separate ways
• go so far as to
• go so far as to do something
• go south
• go spare
• gospel truth
• go stag
• go straight
• Go take a running jump!
• Go tell it to the marines.
• Go tell that to the marines.