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No, it's not a root word. 'Simul' stems from the Latin meaning 'at the same time' and 'taneous' appears to be abstracted from 'spontaneous'. Neither of those are whole words in English, however, so the irreducible English word here is 'simultaneous.' The suffix 'ly' makes it an adverb.
What else can I help you with?
What is the root word of river?
There is no root word of river. It itself is a root word.
What is the root word for conference And what is the root word for adhesive?
the root word is'confirminglyishness'
What is the root word of unusual?
Root word is usual.
What is the root word for decorate?
the root word is decor and that is the root word of decorate
What is the root word of the word gifted?
The root word is gift.
What is the root word of the word endless?
end is the root word
What is the root word to intricate?
Tri is the root word of intricate. The root word means three.
What is the root word of the word impersonate?
The root word of impersonal is person.
What is the root word of unbroken?
The root of the word unbreakable is break.
What is the root word for combine?
The root word for "combine" is "com-" which means "together" or "with".
What is the root word of conventions?
the root word is vent
What is the root word for dully?
the root word is dull
