Sponsor.
crevasse
The word with the 3rd, 4th, 6th, and 7th letters being the same is "bookkeeper."
concerning
achieve
millennia
Mammals is the word.
The word you're after is sweepstake
The only 7-letter English words are farside (s is 4th letter) and fridges (s is 7th letter).
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 19 words with the pattern -A--ARD (and one that is considered a swear word). That is, seven letter words with 2nd letter A and 5th letter A and 6th letter R and 7th letter D. In alphabetical order, they are:dastardgabbardhaggardhalyardhaywardlaggardlaniardlanyardmallardmansardmanwardmazzardnaywardsaggardtailardtankardtanyardvanwardwayward
Armchair is an 8 letter word. The 7th letter is i.
G. It is 7th letter in the alphabet and 7th letter in the word. Also applies to "Washington"
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern F---WORD. That is, eight letter words with 1st letter F and 5th letter W and 6th letter O and 7th letter R and 8th letter D. In alphabetical order, they are: foreword