谓反复地多方思考。《花月痕》第七回：“﹝ 采秋 ﹞痴痴呆呆，想来想去，直到一下鐘， 贾氏 进来几次，催他去睡，才叫 红豆 和老妈服侍睡下。”《文汇报》1981.11.16：“什么事呢？想来想去，还是那个象征着世界排球技术最高水平的金杯。”

1.think it over and over again; turn over in one's mind; think back and forth to oneself; consider carefully and at length; (She) thought and thought, racking (her) brains right and left.