uncertain

Adj	[incierto, indefinido, dudoso | dubitativo | problemático | indeterminado | inseguro, indeciso, perplejo, irresoluto, vacilante | inconstante, variable, cambiante]	uncertain

~ N	~ etiology, ~ function, ~ future, ~ genotype, ~ ground, ~ origin, ~ parentage, ~ paternity
	Ivan, a gorilla of uncertain origin, was examined genetically to clarify his taxonomic placement.

V ~	appear ~, be ~, remain ~
	Although their developmental significance remains uncertain, these findings provide the first evidence...

Adv ~	especially ~, highly ~, still ~
	However, these conclusions remain highly uncertain,...

~ Prep	~ about, ~ of, ~ without
	We are somewhat uncertain about the oligomeric state and mass of p23Skp1.