Development is pronounced də-VEL-əp-mənt (IPA /dɪˈvɛləpmənt/). Stress stays on 'VEL'; the rest is unstressed schwa sounds.
IPA: /dɪˈvɛləpmənt/
Syllables: də · VEL · əp · mənt
Common ESL mistake: Learners stress 'op' saying 'de-vel-OP-ment'.
Tip: Stress stays on 'VEL'; the rest is unstressed schwa sounds.