unprofessionalness means Synonym of unprofessionalism. Lexicurio rates it Sui generis — a strength score of 95 out of 100.
noun
- Synonym of unprofessionalism.““[…] if I am questioned, I shall merely say that I designed it myself, with a little assistance from a professional architect, whose intentions were good, but who had never been called upon to live in a house of his own planning. Will that answer?” / "“Perfectly,” replied Mr. Brook; “it will amply account for the—well, we will say the unprofessionalness of the plan.””