Another word for flimsiest

But this imposing superstructure rested on the flimsiest of foundations.

Her whole history rests on the flimsiest authority, but her alleged prophecies have had from the 17th century until quite recently an extraordinary hold on the popular imagination.

of Sweden, on the flimsiest 'of pretexts, Invasion of forced a war upon reluctant and inoffensive Poland, Charles X.

flimsyndly, the statement is based on the flimsiest of evidence.