Excommunicate is a 13 letter word. It begins and ends with the letter e.
advertisementaccompanimentacupuncturistapportionment
Senselessness
televangelist?
lethargically
A 13-letter word that starts with "s" and ends with "s" is "schoolteachers."
oceanographer
Johor is one of the 13 states in Malaysia. It ends with the letter r.
Procrastinate.
Boardinghouse and brainstorming are 13 letter words. The 3rd letter is the letter a.
In the absence of a definition, I'll provide one. What is a 13 letter word for vertical? Answer: perpendicular
Some 13 letter words that start with the letter a:abbreviationsabnormalitiesacceptabilityaccessibilityaccommodationaccreditationacquaintancesacupuncturistadministratoradmissibilityadvertisementaffordabilityalgebraicallyalternativelyanniversariesannouncementsanticipationsapplicabilityappropriationapproximationarchitecturalassassinationassignabilityastonishinglyattainabilityattentivenessauthenticallyauthoritativeauthorization