Yes safes is a word. It can be used when talking about numerous enclosed rooms/boxes/vaults where money/valuables are stored.
Safe.
They returned safely to Earth. He was unable to safely cross the street.
Safe can be an adjective and a noun. Adjective: Not in danger. Noun: A metal box in which valuables can be locked in.
yes, it modifies a verb, e.g. He arrived safely.
'conduis prudemment' (imperative)
The word dork does not translate into Spanish. You can safely use the word dork.
Some word forms for "safe" include safety, safely, and safer.
I am safely esconced in my hotel room.
retour en toute sécurité
No, it is not. The word landed in this context is a verb, the past tense of 'to land' (aircraft). However, safely is indeed an adverb.
No, -ly is a suffix, meaning that is added on to the ending to make it past tense of future tense or present tense.
There is no prefix, a prefix is BEFORE the root word. The suffix of safely is ly, safe is the root word