Here are some possible words:
domineer
engineer
foreseer
killdeer
muleteer
mutineer
overseer
reindeer
pioneer
auctioneerbeercareercheerdeerengineerfreerjeeroverseerpeerpioneerpuppeteersneersteerseersheervolunteer
Reindeer
heets-eer (הצעיר)
It is on the last syllable ("-eer").
sah-EER (שעיר)
There are two: eer -ie
Likely candidate is the word: err.Err is verb, and it means "be mistaken or incorrect; make a mistake."
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ---A-EER. That is, eight letter words with 4th letter A and 6th letter E and 7th letter E and 8th letter R. In alphabetical order, they are: bayadeer
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern B-EER---. That is, eight letter words with 1st letter B and 3rd letter E and 4th letter E and 5th letter R. In alphabetical order, they are: breering
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern S---EER-. That is, eight letter words with 1st letter S and 5th letter E and 6th letter E and 7th letter R. In alphabetical order, they are: schmeers
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --O-EER-. That is, eight letter words with 3rd letter O and 5th letter E and 6th letter E and 7th letter R. In alphabetical order, they are: pioneers