Clam and clamo

[leahd]

If clam means secretive, how does clamo relate to become I shout? The two seem opposite to me, but I know with language, the obvious isn't always the answer. I am sure there is a reasonable, logical association, but I would be greatful to someone to point it out. Thanks.

[jeremiah213]

leahd,

On a suspicion that "clam" was originally "clan" since the "m" is easier to pronounce than the "n" at the end of a word. I typed in "clan" @
http://archives.nd.edu/latgramm.htm and it turned up:

clanculum Adv. [secretly , in secret]. Prep. with acc. [unknown to].
clandestinus -a -um [secret , clandestine]; Adv. clandestino.
clangor -oris m. [sound , clang, noise].

There are two main possible explainations. The first is devlopmental, that over time due to the ease of pronunciation clan became clam. The second is that these opposite ideas were connected in the Greek or Roman mind, and therefore had a linguistic connection as well. I lean towards the former but due to clangor... I cannot tell which came first.