non-negligible

Not safely ignored

Non-negligible describes something significant enough to matter or warrant consideration.

The term appears most often in scientific, statistical, and technical contexts where precise quantities are being evaluated: a non-negligible risk of side effects, a non-negligible portion of the budget.

It's a careful, understated way of saying something is substantial without overstating its importance.

magnitude

substantial

Of notable size or importance

measurable · significant · meaningful · tangible · palpable · solid · marked · pronounced · moderate · reasonable

importance

significant

Having notable importance

meaningful · noteworthy · considerable · substantial · weighty · serious · critical · crucial · pivotal · influential

detectability

perceptible

Able to be sensed

observable · measurable · visible · apparent · evident · manifest · obvious · marked · distinct · pronounced

Opposites
significance/importance

non-negligiblenegligible

Too small to consider

insignificant · trivial · inconsequential · immaterial · inconsiderable

consequentiality

non-negligibleinconsequential

Lacking significance or impact

without consequence · harmless · ineffectual · irrelevant · beside the point

attention-worthiness

non-negligibleignorable

Able to disregard

dismissible · unimportant · forgettable · beneath notice · not worth mentioning

Family

neglect, neglected, negligible, neglectful, negligent, neglecting, negligence, negligibly, negligently

Familiarity
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Used worldwide · Timeless · Abstract · Rated G