Senses
白白 in vain
To no purpose; without result or effect
白白 for free
Without having to pay or give anything in return; for nothing
白白 for no reason
Without cause or justification; for no particular reason
白白 helplessly
Without being able to do anything about a situation; standing by while something bad happens
白白 scot-free
Without consequence or being held accountable; with nothing more to do with the matter
白白 white
White; snowy white