They can be antonyms (opposite meanings), not synonyms.
antonyms
The synonyms of infirm are; ailing, anemic. The antonyms are; healthy, strong.
antonyms of notoriety?
Syn:predicted Ant:unpredictable
You're so impassable.
The mountain road was impassable because of the huge quantities of snow on it.
The word "impassable" is an adjective. It describes something that cannot be passed or crossed.
Pass
The spelling is impassable (blocked, unnavigable).The similar word is impossible (not possible).
What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?What river is impassable by man in Arunachal Pradesh and joins the Ganga River in Bangladesh?
The root word or base word of "impassable" is "pass."
theory
There is at least 2 antonyms for the noun quake. Which is steady and still
not passable, blocked
together, adjacent
Unannoyed