ADJ.
half, leaning
VERB + DRAGGINGLY
began, rising, sing
DRAGGINGLY + NOUN
dozen
PREP.
on
adv
In a way that drags; with a dragging motion.
"The harpoon," said Ahab, half way rising, and draggingly leaning on one bended arm — "is it safe?"
Slowly; with reluctance, or as if held back.
The children began to sing draggingly. Half a dozen carried the first verse through alone.