Good News Translation
If the lender insists on being paid, he can count himself lucky to get back half. If he doesn't insist, the borrower has robbed him and made an unnecessary enemy. All the lender will get from him are curses, insults, and disrespect, but never any gratitude.

New Revised Standard Version
If he can pay, his creditor will hardly get back half, and will regard that as a windfall. If he cannot pay, the borrower has robbed the other of his money, and he has needlessly made him an enemy; he will repay him with curses and reproaches, and instead of glory will repay him with dishonor.

Contemporary English Version
Sometimes they feel lucky to get back half of the money they lent. And instead of respect, a lender often gets nothing but curses and angry words from a borrower who is robbing the lender by not paying back the loan.

New American Bible
If he can pay, the lender will recover barely half, and will consider that a windfall. If he cannot pay, the lender is cheated of his money and acquires an enemy at no extra charge; With curses and insults the borrower will repay, and instead of honor will repay with abuse.

Douay-Rheims Bible
But when they should repay, they will ask time, and will return tedious and murmuring words, and will complain of the time:

But when they should repay, they will ask time, and will return tedious and murmuring words, and will complain of the time:

Sirach 29:4
Many have looked upon a thing lent as a thing found, and have given trouble to them that helped them.

Sirach 29:5
Till they receive, they kiss the hands of the lender, and in promises they humble their voice:

Sirach 29:7
And if he be able to pay, he will stand off, he will scarce pay one half, and will count it as if he had found it:

Sirach 29:8
But if not, he will defraud him of his money, and he shall get him for an enemy without cause.