In fact, many people refer to the document as a 'bill of sale contract'. In most cases, the contract is legally binding between buyer and seller as long as the bill of sale follows guidelines required in the state where the sale or transfer takes place.
Infamy definition, extremely bad reputation, public reproach, or strong condemnation as the result of a shameful, criminal, or outrageous act: a time that will live in infamy. See more. Dictionary.com
Ineffable comes from ineffabilis, which joins the prefix in-, meaning not, with the adjective effabilis, meaning capable of being expressed. Effabilis comes from effari (to speak out), which in turn comes from ex-and fari (to speak).