Although it is strictly 'informal' in use (someone who is biased against persons of a different height), the word "sizeist" is listed in at least one dictionary as an English word.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --Z-I-T. That is, seven letter words with 3rd letter Z and 5th letter I and 7th letter T. In alphabetical order, they are: sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern --ZEI--. That is, seven letter words with 3rd letter Z and 4th letter E and 5th letter I. In alphabetical order, they are: sizeism sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern -IZE---. That is, seven letter words with 2nd letter I and 3rd letter Z and 4th letter E. In alphabetical order, they are: dizened sizeism sizeist wizened
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --ZE--T. That is, seven letter words with 3rd letter Z and 4th letter E and 7th letter T. In alphabetical order, they are: sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -IZ---T. That is, seven letter words with 2nd letter I and 3rd letter Z and 7th letter T. In alphabetical order, they are: rizzart sizeist siziest
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern SIZ-I--. That is, seven letter words with 1st letter S and 2nd letter I and 3rd letter Z and 5th letter I. In alphabetical order, they are: sizeism sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern SI--I-T. That is, seven letter words with 1st letter S and 2nd letter I and 5th letter I and 7th letter T. In alphabetical order, they are: sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 8 words with the pattern -I-EI--. That is, seven letter words with 2nd letter I and 4th letter E and 5th letter I. In alphabetical order, they are: fideism fideist fineish niceish sizeism sizeist tineids viseing
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 7 words with the pattern ---EI-T. That is, seven letter words with 4th letter E and 5th letter I and 7th letter T. In alphabetical order, they are: ableist atheist epeeist fideist hygeist receipt sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -IZE--T. That is, seven letter words with 2nd letter I and 3rd letter Z and 4th letter E and 7th letter T. In alphabetical order, they are: sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --Z-IST. That is, seven letter words with 3rd letter Z and 5th letter I and 6th letter S and 7th letter T. In alphabetical order, they are: sizeist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern SI--IS-. That is, seven letter words with 1st letter S and 2nd letter I and 5th letter I and 6th letter S. In alphabetical order, they are: sickish sizeism sizeist