Plumber is pronounced PLUM-ər (IPA /ˈplʌmər/). Silent 'b' — say 'PLUM' then a soft 'er' ending.
IPA: /ˈplʌmər/
Syllables: PLUM · ər
Common ESL mistake: Learners pronounce the 'b' saying 'plum-ber' with a /b/.
Tip: Silent 'b' — say 'PLUM' then a soft 'er' ending.