There are 1,828 words containing "ei" inthe TWL, (the Scrabble dictionary). Here is a small sample:
weightinesses
weighting
weightless
weightlessly
weightlessness
weights
weighty
weimaraner
weimaraners
weiner
weiners
weir
weird
weirded
weirder
weirdest
weirdie
weirdies
weirding
weirdly
weirdness
weirdnesses
weirdo
weirdoes
weirdos
weirds
weirdy
weirs
weisenheimer
weisenheimers
welterweight
welterweights
wherein
whereinto
whingeing
wisenheimer
wisenheimers
xanthein
xantheins
xenogeneic
yahrzeit
yahrzeits
yuppieish
zein
zeins
zeitgeber
zeitgebers
zeitgeist
zeitgeists
zoogloeic
deceitconceiveleisurereceiptreceive
vein, sleigh, freight, eight weigh, their, beige, veil,
eight eighteen eighth eightieth eighty either eider eiderdown Eisteddfod eidetic eire
The Boxing Glove is "yay ei ei." Warping to Zootopia is "woo woo woo." Warping to Moonhaven is "ei woo woo." Warping to Jungle Island is "yay woo woo." The Sticky Ball is "yay poo poo." Invisibility is "woo woo poo." Growing is "poo poo ei."
Some words that have 'frater' in them are fraternity and fraternize.
Depending on where you are from: either neither
receive; receipt
vein
If you mean words that have the same sound as ie or ei such as receive or believe that is a long ee sound :- speed, reed, deed, read, heed, mead, need, knead.
receipt
deceitconceiveleisurereceiptreceive
A word that has 'ei' and rhymes with 'weight' is 'eight,' as in the number 8.
vein, sleigh, freight, eight weigh, their, beige, veil,
Ei Ei Swe. has written: 'Comparative morphological and anatomical study on some species of genus alocasia neck'
some words are relief, illegal, mistreat and many more. Justin kim Some other words are beige, caffeine, seize, perceive, sleight, weight, skein, and conceive. Isaber Houghley (ShS)
doesn't look like a great list. but this might be a good start: http://www.yourdictionary.com/search?ydQ=*ei&area=entries&x=0&y=0 doesn't look like a great list. but this might be a good start: http://www.yourdictionary.com/search?ydQ=*ei&area=entries&x=0&y=0
eight eighteen eighth eightieth eighty either eider eiderdown Eisteddfod eidetic eire