Boardinghouse and brainstorming are 13 letter words. The 3rd letter is the letter a.
A 6-letter word with the letter "w" as the third letter is "answer." The word "answer" has six letters and the letter "w" appears in the third position, making it a suitable answer to your question.
A five letter word with the third letter O and the last letter C is stoic.
saddlesettlesallowcheesecattlecuddleladdielassieladderletterbattleballadbatterbannerbetterbuttermattermiddlemellowmutterpatterpaddleputterpillowpelletpalletpuddletallowtellerhappenhollowfellowfollowfallowfillerfitterfatterkettlekittengutter
The 13-letter word that can be formed from the letters in "yetsaloiiocgnmir" is "misarticology."
diddled gagging
Four letter words with X as the third letter:boxyfoxyluxenextpoxysexytaxitextwaxy
Skin
triviality
gain.
from
shifted
transom