suspiciously

to watch someone or something in a way that shows you do not trust them

to act in a way that makes others think you have done something wrong

to behave in a way that suggests secrecy or guilt

to look at someone with interest and often suspicion

to look for a long time with the eyes wide open, showing mistrust

to ask a question in a tone that shows you don't believe the answer or situation

to consider someone or something with suspicion

to look at or think of someone or something in a suspicious way (more formal)

to partly close your eyes in order to see more clearly or to show suspicion

to smell something in a way that suggests you are trying to detect something wrong

to look carefully or with difficulty, especially because of mistrust