i Register
In some senses, outpeep is marked as archaic, poetic. Watch for register when choosing this word.
verb
To peep out.
noun
A peeping or glancing outward.
A blithe lass was she on the first day of the new year, but a blithe lass was she ten days thereafter, as, at the first outpeep of the grey wintry dawn, she stole from her sleepless pillow to take a last virgin look of her father's garden […]