Singly and Step-by-step

Singly adverb - Without aid or support.

Step-by-step and singly are semantically related. In some cases you can replace phrase "Step-by-step" with "Singly", this terms are similar.

Nearby Word: single

Step-by-step adjective - Proceeding or changing by steps or degrees.

Singly and step-by-step are semantically related. Sometimes you can use "Singly" instead an adverb phrase "Step-by-step".