(1) The bird befouled its own nest.

(2) Her long hair was befouled by weeds and sticks.

(3) The foxes cause little nuisance, whereas domestic pets befoul the streets, parks and gardens.

(4) How dare you) befoul my lucky number!

(5) Certain people used to befoul its banks every day. Others who came there in the morning to bathe would abuse the offenders loudly.

(6) She turned as red as a beetroot when they befouled her reputation.

(7) The symptoms are periodic spells of regression: They drop to all fours, bark, befoul their apartments.