Collocations for beg - verb

1. ask sb for food, money, etc.

be forced to, have to

for
They were forced to beg for food.

from
He had to beg food from passers-by.

almost, practically
In the end they almost begged him to take the job.

humbly
We humbly beg you to show mercy.

silently
Don't leave me, he begged her silently.

desperately, frantically

be forced to, have to

for
We went to him to beg for forgiveness.

of (formal)
Do not do that, I beg of you.

Beg is used with these nouns as the object:
food, forgiveness, indulgence