different between suspiciously vs suspicious

English

suspicious +? -ly

suspiciously (comparative more suspiciously, superlative most suspiciously)

(manner) In a way suggesting suspicion.
The police officer looked at her suspiciously.
(manner) In a way that arouses suspicion.
She was behaving very suspiciously.
(evaluative) Causing suspicion.
Suspiciously, he had taken out an insurance policy on his wife just months earlier.
(degree) To a degree that makes one suspect something.
It looked suspiciously like a molding-compound repair of a dent.

From Old French sospecious, from Latin suspiciosus, suspitiosus.

suspicious (comparative more suspicious, superlative most suspicious)

Arousing suspicion.
His suspicious behaviour brought him to the attention of the police.
- 1957, H. E. Bates, Death of a Huntsman
  If their views were entrancing their sanitation was primeval; if they possessed stables they were also next to the gas-works; if their gardens were delightful there were odours suspicious of mice in the bedrooms.
Distrustful or tending to suspect.
I have a suspicious attitude to get-rich-quick schemes.
Expressing suspicion
She gave me a suspicious look.

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