1. makes something too thin; reduces the thickness of something excessively
Usage: third person singular present tense of 'overthin'

Examples

• She overthins the paint by adding too much solvent.
• The chef overthins the sauce, making it too watery.
• He overthins the dough, and it tears easily.
• Overthinning the material weakens its structural integrity.
• The artist overthins the glaze on the pottery.