Verses with the word unprofitable in the Apocrypha (6 verses):

Wisdom of Solomon 1:11
Therefore beware of murmuring, which is unprofitable; and refrain your tongue from backbiting: for there is no word so secret, that shall go for nought: and the mouth that belieth slayeth the soul.

Wisdom of Solomon 3:11
For whoso despiseth wisdom and nurture, he is miserable, and their hope is vain, their labours unfruitful, and their works unprofitable:

Wisdom of Solomon 4:5
The imperfect branches shall be broken off, their fruit unprofitable, not ripe to eat, yea, meet for nothing.

Wisdom of Solomon 16:29
For the hope of the unthankful shall melt away as the winter's hoar frost, and shall run away as unprofitable water.

Sirach 16:1
Desire not a multitude of unprofitable children, neither delight in ungodly sons.

Sirach 37:19
There is one that is wise and teacheth many, and yet is unprofitable to himself.