13-Letter Words Containing SYN

There are 30 13-letter words that contain SYN. 4 are common words, such as IDIOSYNCRATIC and SYNCHRONIZING. A rarer one is TENOSYNOVITIS. In this set, I is the most frequent open letter (24 words). 3 words contain a doubled letter.

Full list 30

Common words

idiosyncraticsynchronizingsyntacticallysyntheticallysynchronouslyasynchronismsparasynthesispolysyndetonspolysyntheticresynchronizesynchromeshessynchronicity
idiosyncraticsynchronizingsyntacticallysyntheticallysynchronouslyasynchronismsparasynthesispolysyndetonspolysyntheticresynchronizesynchromeshessynchronicitysynecdochicalasyndeticallyeugeosynclineparasynthesesparasyntheticphotosynthateresynthesizedresynthesizessemisyntheticsynaesthesiassynarthrodialsynchronisingsynchronisticsynchronizerssynchroscopessyndactylismssynecologicaltenosynovitis

About this list

Words
30 (4 common words)
Common example
idiosyncratic
Rare example
tenosynovitis
Doubled letters
3
Ending in S
11
Most frequent letter
I (24)

Questions

How many 13-letter words containing syn are there?

30. 4 of them are common words.

What is a common example?

IDIOSYNCRATIC is among the common words in this set.