circumstantial

(chiefly in the plural) Something incidental to the main subject, but of less importance.

“the circumstantials of religion”

Pertaining to or dependent on circumstances, especially as opposed to essentials; incidental, not essential.

Abounding with minor circumstances; in great detail; particular.

Full of circumstance or pomp; ceremonial.

Suggesting guilt, but not proving it conclusively.

“It is unlikely he will be convicted; the evidence against him is circumstantial at best.”