light·ly 
(lītlē)
(lītlē)adv.
1. With little weight or force; gently.
2. To a slight extent or amount: apply paint lightly.
3.
a. With little difficulty; easily.
b. With agility and grace; nimbly.
4.
a. In a carefree manner; cheerfully: took the news lightly.
b. Without sufficient care or consideration; indifferently: treated the situation much too lightly.
- keep (one's) head
- keep one's head
- keep (one's) nose clean
- keep one's nose clean
- keep one's nose to the grindstone
- keep one's peace
- keep one's place
- keep (one's) powder dry
- keep one's powder dry
- keep (one's) shirt on
- keep one's shirt on
- keep one's weather eye open
- keep one's wits about
- keep one's wits about one
- keep pace
- keep peace
- keep place
- keep powder dry
- keepsake
- keep shirt on
- keep (someone) company
- keep someone company
- keep tabs on
- keep the peace
- keep the wolf from the door