IPA: /ˈtʃiːf.tən.si/
KK: /ˈtʃifˌteɪnsi/
The position or area that is governed by a chief, including the authority and responsibilities associated with that role.
The chieftaincy of the tribe has been passed down through generations.
Chieftaincy is formed from "chief" (from Old French *chief*, meaning leader or head) and "-taincy" (derived from the suffix "-ancy", which indicates a state or condition). The word refers to the state or condition of being a chief or leader.
Think of a 'chief' as a leader, and '-taincy' as the state of being that leader. This helps you remember that chieftaincy means the condition of being a chief.
No commonly confused words.