Date: 1850
intransitive verb
1.
a. : to come to the expected total
the bill doesn't add up
b. : to form an intelligible pattern : make sense
her story just doesn't add up
2.
a. : amount 1b — used with to
the play adds up to a lot of laughs
b. : to amount to a lot
just a little each time, but it all adds up
transitive verb
: to form an opinion of
added him up at a glance