Antonyms of adj off-the-shelf

1 sense of off-the-shelf

Sense 1
off-the-rack, off-the-shelf, off-the-peg, ready-to-wear -- ((especially of clothing) made in standard sizes and available from merchandise in stock; "a ready-made jacket"; "ready-to-wear clothes")

INDIRECT (VIA ready-made) -> custom-made, custom -- (made according to the specifications of an individual)

Similarity of adj off-the-shelf

1 sense of off-the-shelf

Sense 1
off-the-rack, off-the-shelf, off-the-peg, ready-to-wear -- ((especially of clothing) made in standard sizes and available from merchandise in stock; "a ready-made jacket"; "ready-to-wear clothes")
       => ready-made (vs. custom-made) -- (made for purchase and immediate use)