suspiciously

As adverbs the difference between doubtfully and suspiciously

is that doubtfully is in a doubtful manner, in context of doubt or ambiguity, questionably while suspiciously is (manner) in a way suggesting suspicion.

As an adverb suspiciously

is (manner) in a way suggesting suspicion.

As an adjective undefined is

lacking a definition or value.

As a noun suspiciousness

is the state or quality of being suspicious.

As an adverb suspiciously is

in a way suggesting suspicion.

As adverbs the difference between suspiciously and trustfully

is that suspiciously is (manner) in a way suggesting suspicion while trustfully is in a trustful manner.

As an adverb suspiciously

is (manner) in a way suggesting suspicion.

As an adjective sceptical is

having, or expressing doubt; questioning.

As adverbs the difference between auspiciously and suspiciously

is that auspiciously is in an auspicious way while suspiciously is (manner) in a way suggesting suspicion.

As a noun taxonomy

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

As an adverb suspiciously is

(manner) in a way suggesting suspicion.