Garbage entered English in the 15th century from Anglo-Norman, where it referred to the offal and entrails of poultry prepared for cooking. Medieval English cookbooks used the word without any negative connotation — a recipe might instruct the cook to clean the garbage before adding it to a stew. The term likely traces back to Old French garbe, meaning a sheaf or bundle, possibly through the idea of sorting useful grain from waste material.
During the 15th and 16th centuries, the meaning gradually shifted from animal innards to kitchen waste more broadly. By the late 1500s, English speakers were applying the word to any household refuse. This semantic drift coincided with growing urban populations in England, where the accumulation of waste in streets and rivers became a pressing civic problem.
The word took on its fully modern sense — worthless material of any kind — by the 17th century. North American English adopted garbage as the standard term for household waste, while British English generally preferred rubbish. This transatlantic split persists today.
Garbage also developed figurative uses. By the 19th century, people described worthless ideas or speech as garbage. The computing world borrowed it in the 1960s with the phrase garbage in, garbage out, warning that flawed input data produces flawed results regardless of processing quality.
The word garble, meaning to distort or scramble information, shares a related origin through the same Old French root, originally meaning to sift or sort through goods. Both words preserve the ancient idea of separating what is useful from what is not, though they branched in opposite semantic directions centuries ago.