singly

As adverbs the difference between singly and kingly

is that singly is in a single or unaccompanied manner; without a companion while kingly is in a royal manner.

As an adjective kingly is

majestic and regal.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adverb singly is

in a single or unaccompanied manner; without a companion.

As adverbs the difference between singly and alonely

is that singly is in a single or unaccompanied manner; without a companion while alonely is only; merely; singly.

As an adjective alonely is

exclusive; sole; only.

As adverbs the difference between singly and singlely

is that singly is in a single or unaccompanied manner; without a companion while singlely is singly, individually.