shrewdie
/ˈʃruːdɪ/Definitions
1. noun
A person who is skilled or knowledgeable about something, especially in a particular area or field.
“She’s a shrewdie on local history, able to recall even the smallest details.”
2. adjective
Having or showing a keen understanding or expertise in a particular subject.
“The shrewdie approach to problem-solving led to a breakthrough in the project.”