pos·si·bly 
(pŏsə-blē)
(pŏsə-blē)adv.
1. Perhaps: He hesitated, possibly remembering his unsuccessful last attempt.
2. Conceivably: Could they possibly be here already?
3. Under any circumstances: I can't possibly do it.
- keep one's eyes open
- keep (one's) eyes open/peeled
- keep one's eyes peeled
- keep one's fingers crossed
- 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