thickly
adverb
ˈθɪkli 
ˈθɪkli 
1 in a way that produces a wide piece or deep layer of somethingthickly sliced breadApply the paint thickly in even strokes.2 thickly wooded, populated, etc. having a lot of trees, people, etc. close together3 in a deep voice that is not as clear as normal, especially because of illness or emotion‘Just leave me alone,’ he said thickly.