Colourless and Second class

Colourless adjective - Weak in color; not colorful.

Second class and colourless are semantically related. In some cases you can replace phrase "Second class" with "Colourless", this terms are similar.

Nearby Words: colour, colourful, colourlessness

Second class noun - Not the highest quality in a classification.

Colourless and second class are semantically related. Sometimes you can use "Colourless" instead an adjective phrase "Second class".