Whether a global style emerged from the showing at Versailles and whether American fashion has become a global force, as the curators contend, are highly conjectural.

Publishers pose these questions almost as an afterthought; their answers tend to be highly conjectural.

The chapter on St Paul is highly conjectural.

While highly conjectural, the book does make a reasonable case for the craft having been of terrestrial rather than extraterrestrial origin.

All of these suggestions appear to be highly conjectural.

The episode strongly hints Elizabeth's participation, though evidence of this remains highly conjectural.

Such concepts make difficult and highly conjectural theories as Mobius-strip mathematics seem as easy as the ABC by comparison.

The documents which supported Shell's licence application were "highly conjectural in nature", containing unsubstantiated assumptions, minimal data and extrapolations from unnamed studies.

The design of the earliest oared vessels is mostly unknown and highly conjectural.

The initial sketches released to the public were highly conjectural.