Antonyms of adj top-flight

1 sense of top-flight

Sense 1
top-flight, top-hole, topping -- (excellent; best possible)

INDIRECT (VIA superior) -> inferior -- (of low or inferior quality)

Similarity of adj top-flight

1 sense of top-flight

Sense 1
top-flight, top-hole, topping -- (excellent; best possible)
       => superior (vs. inferior) -- (of high or superior quality or performance; "superior wisdom derived from experience"; "superior math students")