Clear or manifest to the understanding; plain; evident; obvious; known; palpable; indubitable.
Capable of being seen, or easily seen; open to view; visible to the eye, eyely; within sight or view.
Appearing to the eye or mind (distinguished from, but not necessarily opposed to, true or real); seeming.
Difficult or impossible to comprehend or evaluate.
Not ponderable; without sensible or appreciable weight; incapable of being weighed.
An imponderable question.
A factor that cannot be anticipated.
An imponderable substance or body; specifically, in the plural, a name formerly applied to heat, light, electricity, and magnetism.