IPA: //ˈspiːkiːzi//
KK: /ˈspikˌiːzi/
A secret bar or club where people can buy and drink alcohol, especially during a time when it was illegal to do so.
During the Prohibition era, many people visited speakeasies to enjoy a drink in secret.
Speakeasy is formed from "speak" (from Old English "specan", meaning to talk or converse) and "easy" (from Old French "aisé", meaning comfortable or relaxed). The term originally referred to establishments where patrons could speak quietly and easily about illegal activities, particularly during Prohibition in the United States.
Think of a place where you can 'talk' ('speak') comfortably and without fear — that's what a speakeasy was all about.
No commonly confused words.