Synonyms of 'two-edged'
The effect of the laws was two-edged.
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If you describe something as ambiguous, you mean that it is unclear or confusing because it can be understood in more than one way.
His remarks clarify an ambiguous statement given earlier this week.
If you say that someone is ambivalent about something, they seem to be uncertain whether they really want it, or whether they really approve of it.
He maintained an ambivalent attitude to religion throughout his life.
A backhanded compliment is a remark which seems to be an insult but could also be understood as a compliment. A backhanded compliment is also a remark which seems to be a compliment but could also be understood as an insult.
a backhanded compliment
Thesaurus for two-edged from the Collins English Thesaurus
having two cutting edges