"Strook it rich" is an informal phrase that means to suddenly become very wealthy or successful. The possible antonyms for this expression could include struggling, failing, poor, destitute, or bankrupt. These words denote a much less fortunate situation, where success or wealth is far from immediate or guaranteed. "Struggling" implies a constant effort to make ends meet, such as in a job with a low wage. "Failing" suggests an inability to achieve success, whether in a business venture, an academic pursuit, or a personal goal. "Poor" and "destitute" both mean lacking sufficient resources, while "bankrupt" refers to a financial state of insolvency.