Fromun- +‎determined.

undetermined (notcomparable)

1. Notdetermined; notsettled; notdecided.
2. Notlimited; notdefined;indeterminate.

• Noah Webster (1828) “undetermined”, inAn American Dictionary of the English Language: […], volume II (J–Z), New York, N.Y.: […] S. Converse; printed by Hezekiah Howe […],→OCLC.
• William Dwight Whitney,Benjamin E[li] Smith, editors (1911), “undetermined”, inThe Century Dictionary […], New York, N.Y.:The Century Co.,→OCLC.

undetermined

1. simplepast andpastparticiple ofundetermine

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