off-the-peg
Synonym discussion
Sense: adjective/1
All three words describe clothing that is not custom-fitted. 'Off-the-peg' is primarily British; outside the UK many learners will hear 'off-the-rack' instead. 'Ready-made' is the broadest term — it applies to non-clothing items such as curtains, meals, or furniture as well. 'Ready-to-wear' is used in the fashion industry for collections produced in standard sizes and sold in stores, and carries a slightly more professional or polished tone. For everyday shopping, 'off-the-peg' and 'off-the-rack' are the most natural choices. A British speaker might say 'I grabbed an off-the-peg jacket from Marks & Spencer,' while an American speaker would say 'I grabbed an off-the-rack jacket from the mall.'
Common collocations
Etymology
This compound adjective comes from the earlier adverbial phrase 'off the peg', which referred to a ready-made garment hanging on a shop peg or hook — as opposed to fabric that a tailor would cut and sew. The phrase became common in British English during the 1800s as mass-produced clothing grew widespread, and the hyphenated adjective form appeared by the early 1900s.
First known use
1959
1959, in the meaning defined above