Editorialized and effectiveness are 13 letter words. They begin with the letter e.
acceptabilityaccommodationadvertisementalternatively
Contamination.
Resurrections
Technological, telecommuting, telemarketing, temperamental and theologically are 13 letter words. They begin with the letter t.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 13 words with the pattern F--P--. That is, six letter words with 1st letter F and 4th letter P. In alphabetical order, they are: fipple flappy flippy floppy flyped flypes fopped forpet forpit frappe fripon frypan furphy
Some 13 letter words that start with the letter a:abbreviationsabnormalitiesacceptabilityaccessibilityaccommodationaccreditationacquaintancesacupuncturistadministratoradmissibilityadvertisementaffordabilityalgebraicallyalternativelyanniversariesannouncementsanticipationsapplicabilityappropriationapproximationarchitecturalassassinationassignabilityastonishinglyattainabilityattentivenessauthenticallyauthoritativeauthorization
sacrificiallysocializationsophisticationsportsmanshipspecificationstabilizationstandardizingstrengtheningsubcontractorsubstantiallysuperficiallysyllabication
I had to spend some time researching this question, so you owe me one! Here are three 13 letter words that do not have the 'a' vowel in them: disinhibiting, degenerescent, and efferescence.
conflagration, incandescence, scintillation
There are no 13 letter words that start with J and end with K.
acceptabilityaccommodationadvertisementalternatively
Boardinghouse and brainstorming are 13 letter words. The 3rd letter is the letter a.
procrastinate
kleptomaniacs
The letters do not spell any 13 letter words. They can be used to spell many words including the 10 letter words streetcars, stretchers and trimesters.
Zoogeographer is a person who studies plants and animals. It begins with z and contains 13 letters.
Contamination.