freer. γάρ is especially common in sentences which offer a reason for, or an explanation of, a preceding or following statement. It may be used in successive clauses.
a. γάρ is from γέ ἄρ ( = ἄρα), γέ originally giving prominence either to the word it followed or to the whole clause, while ἄρα marked this prominence as due to something previously expressed or latent in the context. The compound γάρ originally emphasized a thought either as the result of existing circumstances or as a patent and well known fact. In most uses of the word, however, the force of its component parts cannot be distinguished nor is it clear in many cases whether γάρ is a conjunction or an adverb marking assurance.
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].