Ameliorate is a word that can be tricky to pronounce for non-native English speakers. The correct pronunciation is ah-meel-yuh-rayt. To break it down, start with the first two syllables: ah-meel. The "ah" sound is like the sound you make when you say "ahh" to express relief. The "meel" sound is similar to the "me" sound in "measure".
Next, move on to the third and fourth syllables: yuh-rayt. The "yuh" sound is similar to the "ee" sound in "fee". The "rayt" sound is similar to the "ate" sound in "plate".
Putting the whole word together, the correct pronunciation of ameliorate is ah-meel-yuh-rayt. Remember to emphasize the middle syllable and to be sure to separate the syllables when saying it.