From the ArcaMax Publishing, Vocabulary Newsletter:
http://www.arcamax.com/news/vocabulary/s-343408-971226
ineluctable \in-ih-LUCK-tuh-buhl\ (adjective) - Impossible to avoid or
evade; inevitable.
"All of this, she thought, more probable than battle orders wrapping
up cigars in enemy territory, a sad and ineluctable fact of history."
-- Padgett Powell, 'Mrs. Hollingsworth's Men'
Ineluctable is from Latin ineluctabilis, from in-, "not" + eluctari,
"to struggle out of, to get free from," from ex-, e-, "out of" +
luctari, "to struggle."