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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Covered one's tracks:

LIAR: One covering tracks, perhaps
LIES: Covers one's tracks, maybe
SHRED: Cover one's tracks, in a way
HID: Covered one's tracks
MONEYLAUNDERING: Covering one's tracks, in a way