CONFIDENT = optimistic 󾍘; self-assured.

CONFIDANT = person you trust with your secrets. 󾆞󾔲󾆑

I am confident in you as my confidant.

EXHAUSTING = tiring.
Cycling 240 km is exhausting.

EXHAUSTIVE = complete, full, thorough.
Make an exhaustive search for clues!

FACT: We can use “whose” with people,animals AND objects:
I know a man whose dad is tall. → ✔️
He has a car whose door is missing. → ✔️