unexplainable, mysterious, inexplicable, puzzling, unusual, suspicious, abnormal, sudden, unknown, unwitnessed, psychogenic, strange, explainable, unexpected, undiagnosed, fat embolism, baffling, unrevealed, atypical, apparent, unreconciled, undetermined, indeterminable, unconfirmed, unrelated, diabetes insipidus, unacknowledged, vasovagal, accidental, undetected, undeterminable, unclarified, petit mal, unsolved, unreported, bizarre, untimely, alarming, psychosomatic, unplanned, peculiar, irregular, grand mal, remediable, apneic, uncovered, perplexing, unconnected, uncommon, imperforate anus, uncharacteristic, unidentified flying object, asphyxial, uncontrollable, unrecorded, unspecified, unseen, undisclosed, startling, incomprehensible, flaccid paralysis, haemorrhagic, tardive, unobserved, unfathomable, unanticipated, unsuspected, unidentifiable, unpremeditated, unnatural, unresolved, premonitory, incompetent cervix, unplumbed, odd, abrupt, unmeasured, antemortem, recurrent, unstudied, cardiac tamponade, unnamable, undiscovered, syncopal, unperceived, catatonic schizophrenia, polydactyly, motiveless, unintentional, avoidable, acanthosis nigricans, explicable, eerie, uncontrolled, extenuating, obscure, disquieting, ebola hemorrhagic fever, unaccounted, paranormal, cryptogenic, troubling, aggravating, concomitant, unavoidable, coincidental, persistent, noticeable, regrettable, transient, unnoticed, debilitating, disturbing, unaccountable, unforeseen, unpredicted

incomprehensible, inexplicable, undetermined