Tested

adj.capable, resilientprofessional

What it means

Shown to be reliable or effective through examination or repeated use.

Reach for it when describing a method, product, or person whose dependability rests on evidence

The climbers followed a tested procedure for crossing the unstable slope.

playful
battle-tested
when performance under severe real pressure is genuinely relevant
not when The military image is inflated for routine office use or a short pilot.
everyday
tried
when practical use has occurred without implying formal evaluation
not when Something tried may have failed, while tested here suggests useful evidence of reliability.
warm
dependable
when confidence from repeated practical use should sound personal
not when Dependable is a broad judgment and does not identify the examination behind it.
professional
proven
when evidence has established effectiveness
not when Proven is stronger and can overclaim what a limited test actually established.
professional
reliable
when consistent performance is the conclusion that matters
not when Reliable states the judgment but hides whether any testing supports it.
professional
validated
when a defined process confirmed requirements or accuracy
not when Validated is a technical claim that informal experience alone cannot support.
formal
certified
when an authorized body has formally confirmed a standard
not when Never use certified when no recognized certification exists.
formal
established
when long acceptance supports confidence
not when Established can rest on habit or authority rather than examination.

tested method
The lab used a tested method and documented the one necessary deviation.
time-tested
The time-tested repair still required inspection after the flood.
tested under
The battery was tested under the same cold conditions expected in service.

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