The past tense of unfocus is unfocused or, less commonly, unfocussed. See all forms of unfocus with easy examples.
The past tense of unflex is unflexed. See all forms of unflex with easy examples.
The past tense of unflesh is unfleshed. See all forms of unflesh with easy examples.
The past tense of unflatten is unflattened. See all forms of unflatten with easy examples.
The past tense of unflag is unflagged. See all forms of unflag with easy examples.
The past tense of unfix is unfixed. See all forms of unfix with easy examples.
The past tense of unfit is unfitted. See all forms of unfit with easy examples.
The past tense of unfist is unfisted. See all forms of unfist with easy examples.
The past tense of unfill is unfilled. See all forms of unfill with easy examples.
The past tense of unfile is unfiled. See all forms of unfile with easy examples.