unattainable

Instead, choose a set of metrics that you can calculate, and that won’t be unattainable, like the open rate below used by Contact Monkey.

Quince posits that high-quality staples shouldn’t be unattainable luxuries.

What sets his approach apart, colleagues say, is the pursuit of reproducible experimentation and statistical analysis that ecologists might traditionally have regarded as potentially unnatural and misleading, if not outright unattainable.

Chronic skin conditions aren’t curable so chasing the unattainable goal of “perfect” skin set by the beauty industry did not fit with the new era of beauty that Topicals is pioneering.

Internet services were very expensive and the internet was considered by many people in India to be an unattainable thing.

The experiment could never be performed: its requirements were unattainable.

"She is unattainable, she is far off like the stars," he thought.

They were impatient of the claims to unattainable excellence advanced for the Greeks and Romans.

What is the use of painting pictures when reality is unattainable?

A hundred feet below me it was rushing forward in abundance, but that was unattainable.