ETYMOLOGY
as if from Latin fremescentem, pr. pple. of fremescere,
freq. vb. from Latin fremere (to roar)
EXAMPLE
“… The tide advances; Syndic Roederer’s and all men’s straits grow straiter and straiter. Fremescent clangor comes from the armed Nationals in the Court; far and wide is the infinite hubbub of tongues …”
From: The French Revolution: A History
By Thomas Carlyle, 1837
Lexicophilia 