intransitive/transitive to calculate the total of several numbers or amounts
Now add up the number of calories you have eaten.
I’m not very good at adding up in my head.
Synonyms and related words
To calculate or count
calculate
count
estimate
1a
intransitive if small amounts add up, they gradually produce a large total
All these littleexpensessoonadd up.
Synonyms and related words
To add up to a total
add up
come to
amount to
2
intransitive usually in negativesif a set of facts does not add up, you do not believe it is correct because it does not match other information that you already have
There’s something about this case that just doesn’t add up.
Synonyms and related words
To seem unreal or untrue
add up
belie
have a hollow ring
add up
phrasal verb
Other entries for this word
add up tophrasal verb
Word Forms
present tense
I/you/we/they
add up
he/she/it
adds up
present participle
adding up
past tense
added up
past participle
added up
DEFINITIONS2
1
intransitive/transitive to calculate the total of several numbers or amounts
Now add up the number of calories you have eaten.
I’m not very good at adding up in my head.
Synonyms and related words
To calculate or count
calculate
count
estimate
1a
intransitive if small amounts add up, they gradually produce a large total
All these littleexpensessoonadd up.
Synonyms and related words
To add up to a total
add up
come to
amount to
2
intransitive usually in negativesif a set of facts does not add up, you do not believe it is correct because it does not match other information that you already have
There’s something about this case that just doesn’t add up.