そびれる is a verb that combines with the ます-stem of another verb to indicate that the action was not performed, often because the right moment passed. It carries a sense of having missed a chance or failed to do something, and it often implies a slight regret or a feeling that the opportunity is gone. For instance, if you meant to ask a question but the timing was off, you might say 聞きそびれた (I missed asking). It is a compound verb, so the resulting form conjugates like a regular る-verb (e.g., そびれた, そびれます). It is commonly used in past tense to talk about missed opportunities that have already happened. Because it focuses on the failure to act, it is not used for intentional omissions; you wouldn't say 食べそびれた if you deliberately chose not to eat. This pattern is more common in written or formal speech, but it can be used in conversation when expressing a missed chance with a nuance of regret.