"experties" is probably misspelled. Trying expert instead Definition of expert
1
[ noun ] a person with special knowledge or ability who performs skillfully
2
[ adjective ] having or showing knowledge and skill and aptitude

Examples

"adept in handicrafts" "an adept juggler" "an expert job" "a good mechanic" "a practiced marksman" "a proficient engineer" "a lesser-known but no less skillful composer"

3
[ adjective ] having or showing great skill or knowledge or special training as expected of a professional

Examples

"an expert opinion"

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