1. In a covert manner.

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

• caverty,
• coverter,
• coverl,
• coversly,
• cowerdly,
• coversely,
• covertor,
• coretly,
• coviently,
• novetly,
• covenetly,
• covretly,
• covertlly,
• Thwertly,
• kovercle,
• Coverkle,
• coveruup,
• coverupp,
• covertley,
• covoratly

• covered,
• couverture,
• covet,
• covert,
• cooperation,
• coverdale,
• Couvertier,
• cooperative,
• cooperator,
• cooperate.

The adjective form of the word "covertly" is "covert".

The plural form of the word "covertly" is "covertlys".

The singular form of the word "covertly" is "covert"