10-Letter Words Starting With SEM

There are 45 10-letter words that start with SEM. 13 are common words, such as SEMAPHORED and SEMAPHORES. A rarer one is SEMITROPIC. In this set, I is the most frequent open letter (40 words). 4 words contain a doubled letter.

Full list 45

Common words

semaphoredsemaphoressemblancessemiannualsemicirclesemicolonssemifinalsseminarianseminariessemivowelssemiweeklysemiyearly
semaphoredsemaphoressemblancessemiannualsemicirclesemicolonssemifinalsseminarianseminariessemivowelssemiweeklysemiyearlysempstresssemanticalsemeiologysemibrevessemidivinesemiformalsemiliquidseminaristseminationsemipostalsemiquaversemblablessemeioticssemestrialsemicolonysemidesertsemidryingsemidwarfssemifeudalsemifittedsemifluidssemigroupssemihoboessemilethalsemimetalsseminomadsseminuditysemiopaquesemipublicsemisacredsemisecretsemisolidssemitropic

About this list

Words
45 (13 common words)
Common example
semaphored
Rare example
semitropic
Doubled letters
4
Ending in S
17
Most frequent letter
I (40)

Questions

How many 10-letter words starting with sem are there?

45. 13 of them are common words.

What is a common example?

SEMAPHORED is among the common words in this set.