When Connie continued to watch her dubiously, Lisa dropped to the bed and sighed heavily.
Even in his time there were sceptics who pointed dubiously to the full-grown bones of "widows" and of men among the so-called virgin relics.
The fact that Schizomycetes produce spores appears to have been discovered by Cohn in 1857, though it was expressed dubiously in 1872; these spores had no doubt been observed previously.
In The Mystery of Mary Stuart the evidence for an early forged letter was presented with confidence; the interpolation of forgeries based on Crawford's declaration was more dubiously suggested.
Moreover, they appear dubiously functional in water.