Knowledgeable

adj.capable, thoughtfulprofessional

What it means

Possessing enough accurate understanding of a subject to explain or apply it well.

Reach for it when describing credible subject knowledge in a resume, review, or recommendation

The knowledgeable guide answered the safety questions in clear, practical language.

playful
savvy
practical know-how helps navigate a field efficiently
not when Savvy is too casual and strategic for academic expertise.
professional
competent
the person can perform the work to a reliable standard
not when Competent may sound like faint praise and does not explain subject depth.
professional
experienced
knowledge has been built through direct practice
not when Experienced measures exposure, which can exist without strong understanding.
professional
expert
recognized mastery is supported by substantial training or results
not when Expert overclaims when the person is simply well prepared.
professional
informed
someone has current facts about a specific issue
not when Informed does not prove deep expertise or practical skill.
formal
authoritative
command of the subject makes the explanation highly credible
not when Authoritative can describe tone or status even when the knowledge is not sound.
formal
well-versed
broad familiarity comes from study or repeated exposure
not when Well-versed suggests range more than hands-on ability.
literary
learned
deep scholarly study is the distinction
not when Learned sounds academic and unnatural for ordinary workplace competence.

knowledgeable about
She is knowledgeable about both the regulations and their practical effects.
knowledgeable staff
Knowledgeable staff helped customers compare the repair options.
highly knowledgeable
The reviewer was highly knowledgeable without making the discussion inaccessible.

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