The scientist questioned whether the existent data were sufficient to support the hypothesis.

Many questions about consciousness exist even among scientists.

The existing protocols often failed under realistic conditions.

Long before humans arrived, an entire ecosystem existed here.

A single wildflower exists between the cracks in the sidewalk, brightening the gray morning.

The existing bridge was inspected thoroughly after the storm.

The reviewer noted that the word existant was repeatedly used as an adjective and recommended correcting it to the proper form.

In his lecture on ontology, he described an exister as one who possesses existence independent of thought.

Scientists debated the existability of microbial life beneath the planet's surface.

In mathematical logic, there exist statements that are true but cannot be proven within the system.