1. past participle of shrink; became smaller in size
2. past tense of shrink; became smaller in size
Usage: less common than ‘shrank’ for past tense

Examples

• My sweater has shrunk in the wash.
• The company has shrunk its workforce by twenty percent.
• The lake has shrunk due to the drought.
• His confidence shrunk after the criticism.
• The tumor had shrunk after treatment.
• The fabric shrunk when exposed to heat.