Wiktionary
creakiest
a. (en-superlativecreaky)
Usage examples of "creakiest".
It was at the top of the house,, all the way up one of the creakiest staircases Rebus had ever climbed.
We know the colony ships they sent out were the oldest, creakiest, leakiest rust-buckets left in the Imperial merchant fleet, so we can't even guess how many actually made it to new homes.