instable

Adjective

Meaning

Not stable; not standing fast or firm; unstable; prone to change or recede from a purpose; mutable; inconstant.

Source: Webster's dictionary

unsteady inconstant variable unstable irregular instability fragile volatile erratic insecure precarious unbalanced shaky changeable capricious

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certain strong constant fixed FAST stable

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blastine

And then what we're gonna get using Instable is this really nice report of how well you've done on your code coverage. Source: Internet