IPA: /ˌoʊvərˈkɜrfl/
KK: /oʊvərˈkɜrfl/
Being too careful or cautious about something, often to the point of being overly worried or anxious.
She was overcareful when crossing the street, checking for cars multiple times before stepping off the curb.
Overcareful → It is formed from "over-" (meaning excessively) and "careful" (from Old English "carful", meaning full of care). The word "overcareful" means excessively full of care or overly cautious.
Think of being 'excessively' ('over-') 'full of care' — that's why overcareful means being overly cautious.
No commonly confused words.