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non-controversial
non-controversial adj. 
/ˌnɑnˌkɑntrəˈvərsiəl/
Brit. /ˌnɒnkɒntrəˈvəːʃl/
, /ˌnɒnkɒntrəˈvəːʃl/U.S. /ˌnɑnˌkɑntrəˈvərʃəl/
, /ˌnɑnˌkɑntrəˈvərʃəl//ˌnɑnˌkɑntrəˈvərsiəl/ΚΠ
1861 Ladies' Repository May 317/1 To judge from what I find in contemporary non-controversial literature.
1928 J. Reith Diary 13 Apr. (1975) i. 100 Winston Churchill..said he would like to..speak for 15 minutes the next night, factual and non-controversial.
1992 Canad. Jrnl. Linguistics 37 56 This material is fairly standard and non-controversial, with the exception of the placement of Osco-Umbrian as an separate (i.e., non-Italic) branch of IE.
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