I before e, except after c


Or when sounded as 'a' as in 'neighbor' and 'weigh'
Unless the 'c' is part of a 'sh' sound as in 'glacier'
Or it appears in comparatives and superlatives like 'fancier'
And also except when the vowels are sounded as 'e' as in 'seize'
Or 'i' as in 'height'
Or also in '-ing' inflections ending in '-e' as in 'cueing'
Or in compound words as in 'albeit'
Or occasionally in technical words with strong etymological links to their parent languages as in 'cuneiform'
Or in other numerous and random exceptions such as 'science', 'forfeit', and 'weird'.

Thanks, Merriam-Webster