Definition of "uncollegian"

We shall, therefore, only very humbly submit whether the whole statement be not rather too theoretic and somewhat too darkly adumbrated in ambiguous phraseology for plain, uncollegian understandings.

1826, Rev. James Gilchrist, The Perpetuity of Christian Baptism Maintained, page 43

[…] the possibility — appalling in the pre-dropout era — of failure and ejection into uncollegian outer darkness.

1980, John Bovey, Desirable Aliens, page 30