1. Without variation.

2. In a uniform manner.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• uniformas,
• uniformi,
• uniformaly,
• uniformely,
• uniforme,
• uniformaty,
• uniformily,
• unifomly,
• unformily,
• uniformes,
• uniformally,
• uniformic,
• uniformtiy,
• yniformly,
• uniforlmy,
• uniforrmly,
• informly,
• Unforell,
• Uniformalizy,
• unifilaly

• uniform,
• unfriendly,
• unformed,
• unfairly,
• unfrock,
• uniformness,
• unfair,
• unfirm,
• uniformity,
• unborn,
• unfurl,
• uniformize,
• unframed,
• uniformed,
• unfree,
• uniformise.

The adjective form of the word "uniformly" is "uniform".

The plural form of "uniformly" is also "uniformly" because it is an adverb and does not have a distinct plural form.

The singular form of the word "uniformly" is "uniformly". The word does not change in singular form.