orce; "she hit her arm heavily against the wall slowly as if burdened by much weight; time hung heavy on their hands" If someone says something heavily, they say it in a slow way which shows a feeling such as sadness, tiredness, or annoyance. `I didn't even think about her,' he said heavily. see also heavy lightly in a weighty manner; clumsily in a heavy-footed manner; he walked heavily up the t