Sin (5 letters)

Wished undone (4 letters)

"Whoops!" (5 letters)

Go astray (3 letters)

Thus, to Tacitus (3 letters)

Stationer's item (6 letters)

Obliteration (7 letters)

Need to be set straight (3 letters)

Part of I.L.O. (3 letters)

Embarrassment for Mosconi (6 letters)

Actress Nazimova (4 letters)

Small error (5 letters)

Doofus (4 letters)

Weasel out (6 letters)

Nullify (4 letters)

Menu option (4 letters)

Unwilling: Var. (4 letters)

Treat badly (5 letters)