sew

sew /ˈsoʊ/ verb
sews; sewed; sewn /ˈsoʊn/ or sewed; sewing
sew
/ˈsoʊ/
verb
sews; sewed; sewn /ˈsoʊn/ or sewed; sewing
Britannica Dictionary definition of SEW
: to make or repair something (such as a piece of clothing) by using a needle and thread
[+ object]
[no object]

sew up

[phrasal verb]
1 
sew (something) up or sew up (something)
: to close or repair (something) by using a needle and thread
2 
informal
a  : to do the final things that are needed to complete (something) in a successful way — often used as (be) sewn/sewed up
b  : to make (something, such as a victory) certain — often used as (be) sewn/sewed up