The antonym for ‘glanced’ is ‘stared’.
Explanation: When we say someone ‘glanced’ at something, it typically means they looked at it briefly or casually. In contrast, when someone ‘stares’, they look at something for a longer period, often with intensity or fixation. Therefore, ‘stared’ can be considered a direct opposite of ‘glanced’ in terms of the duration and intensity of the gaze.