Simple past tense and past participle of frown upon.
Frowned-upon Sentence Examples
There were still wars, Evelyn had confided, even though it was frowned upon by the Council.
His advocacy of anti-slavery principles, then frowned upon by the Methodist authorities, aroused opposition, and eventually resulted in his trial for heresy and the revocation of his licence.
Obviously I went to little school then I went on to Aylesbury Grammar School, and there acting was slightly frowned upon.
The town names were changed in 1917 - but in 1915 the schools were closed, church services were heavily frowned upon.
But law and order were well maintained; the licence of the nobility was sternly repressed; the kingdoms of Sweden and Norway were treated as integral parts of the Danish state, and national aspirations were frowned upon or checked, though Norway, as being more loyal, was treated more indulgently than Sweden.