We don't have synonyms for beganing yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are meaning, beginning and bearing.
(n) :
Misspelling of beginning. [(uncountable) The act of doing that which begins anything; commencement of an action, state, or space of time; entrance into being or upon a course; the first act, effort, or state of a succession of acts or states.]
(n) :
Misspelling of beginning. [(uncountable) The act of doing that which begins anything; commencement of an action, state, or space of time; entrance into being or upon a course; the first act, effort, or state of a succession of acts or states.]