The phrase "gave forth" means to produce or emit. The antonyms for this phrase might include terms such as absorb or contain, as these imply a retention or restriction of energy or matter rather than a release or discharge. Other potential antonyms for "gave forth" might include verbs like hoard, withhold, or keep, which suggest a deliberate effort to hold onto some resources or activity. Depending on the context, other antonyms could include phrases like "stopped giving," "ceased emitting," or "failed to produce." Ultimately, the choice of antonym will depend on the specific meaning and tone of the original sentence or passage.