IPA: /ˈkrɪp.təˌnæl.ɪst/
KK: /ˈkrɪptəˌnælɪst/
A person who is skilled in decoding and interpreting secret messages or codes.
The cryptanalyst worked tirelessly to break the enemy's communication codes.
Cryptanalyst → It is formed from "crypto-" (from Greek "kryptos", meaning hidden or secret) and "analyst" (from Greek "analusis", meaning to unloosen or break down). The word refers to a person who breaks down or analyzes hidden or secret codes.
Think of someone who 'unlocks' or 'breaks down' hidden messages — 'crypto-' means hidden, and 'analyst' means someone who analyzes.
No commonly confused words.