This could be seek.
There is more than one 4-letter word that means "to go in search of."To go in search of:S for seekH for huntL for look
to look or to seek
s
Seek
seek
seek
h as in hunt
h as in hunt
look seek hunt
A seven letter word for below is beneath.
The first letter of the six-letter word that means to go back on a promise is "R," which stands for "reneged."
Enter :)