Present participle of waver; showing uncertainty or indecision; fluctuating or varying in strength or direction.
From Middle English waveren, possibly related to wave, suggesting back-and-forth motion. The word originally described physical movement but developed metaphorical meanings about indecision by the 16th century.
The connection between physical wavering and mental indecision isn't accidental - our brains often mirror our body language. When we're uncertain, we literally waver physically, and conversely, standing still and straight can actually help us feel more decisive!
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