To recover something, or to retrieve it.
Something that is lost and then found is recovered.
The adjective is indivisible.
Synonyms include flawless or ideal.
The word could be innovator, or in one sense a visionary.
Invisible
The word "portable" serves as a one-word substitute for something that is light and small enough to be carried from one place to another. It conveys the idea of being easy to transport and handle.
Something very old could be primeval (earliest, first) or primordial (oldest).
The adverb could be freely or voluntarily.
There is no one-word substitute in English for "son-in-law."
The word you want is florist.
The term is exorbitant. Something with a high price is called expensive.
Sportsmanship is a word substitute for spirit of game