Aguillard (/ˈæɡiːjɑːrd/) is a French surname that can be challenging to spell for non-native French speakers. The "au" diphthong is pronounced as [o] in French. The consonant cluster "guil" is pronounced as [gi] due to the effect of the letter "u" after "g". The final "l" is silent, as is common in French. The phonetic transcription provides a precise guide to spell the word accurately, helping people with different linguistic backgrounds to pronounce it correctly.