Notable

adj.capable, thoughtfulprofessional

What it means

Important, accomplished, or unusual enough to merit particular attention.

Reach for it when drawing attention to a real distinction while leaving room to say exactly what makes it matter

The redesign produced a notable improvement in readability for older visitors.

warm
memorable
the experience remains vivid in people's minds
not when Being memorable does not prove importance or quality.
warm
remarkable
the quality or result is sufficiently unusual to inspire admiration
not when Remarkable is stronger and should not inflate a modest but useful difference.
professional
noteworthy
the fact deserves mention in a report or assessment
not when Noteworthy can sound procedural when the achievement calls for warmer praise.
professional
significant
the size, consequence, or evidence passes a meaningful threshold
not when A statistically significant result may be small or undesirable.
formal
conspicuous
something is plainly visible or hard to miss
not when Conspicuous may be negative and concerns visibility rather than merit.
formal
distinguished
a person's sustained record sets them apart with honor
not when Distinguished suits careers and reputations better than a single interesting detail.
literary
exceptional
performance lies genuinely far beyond the ordinary level
not when Exceptional is a much stronger ranking than notable and needs comparative support.

notable achievement
Completing the restoration under budget was a notable achievement.
notable difference
The second prototype showed a notable difference in battery life.
notable example
The wetland is a notable example of successful urban habitat repair.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.