Answer: knowsonesonions

AnswerCrossword Clue
KNOWSONESONIONSHas proficiency, slangily
KNOWSONESONIONSIs well-versed in a subject
KNOWSONESONIONSHas expertise
KNOWSONESONIONSIs proficient
KNOWSONESONIONSIs highly skilled: Slang.
KNOWSONESONIONSIdentifies certain grocery items.
KNOWSONESONIONSIs adept
KNOWSONESONIONSIs a pro
KNOWSONESONIONSHas the material mastered
KNOWSONESONIONSIs highly versed about something