Basic Details
Word: Omission
Part of Speech: Noun
Meaning: Something that has been left out, or the act of leaving it out.
Synonyms: exclusion, oversight, leaving out
Antonyms: inclusion, addition
How to Spell Omission
Syllables: o - mis - sion
Tricky part: There is only one m, but the s is doubled. Students often swap them round and write ommision.
Watch out for: ommission, omision, ommision
Memory tip: Read it as O + mission. The O stands alone with one m after it, and mission keeps its ss.
Usage Examples
Example 1: The omission of one zero made the bill much too small.
Example 2: We noticed the omission of the last stanza in the printed poem.
Example 3: His name was left off the team list, an omission the coach later fixed.
Fun Fact
The apostrophe in words like don't and it's is sometimes called an apostrophe of omission, because it marks the letters that were left out.
Practise the CREST Way
Spell-o-Spell
Choose the meaning of the only correctly spelt word:
1. transmision 2. omission 3. comission 4. emmission
a) a group given an official task to carry out
b) the giving out of gas, heat or light
c) the sending of a signal or a message
d) something left out, or the act of leaving it out
Show answer
d) something left out, or the act of leaving it out. The family of mission words keeps ss; only omission also has the right number of m's.
Word Cookie
Find the extra letter in the word:
ommission
a) s
b) o
c) i
d) m
Show answer
d) m. Omit has one m, so omission has one m as well.
Word Connection
Choose the antonym of the word omission as it is used in the sentence:
The omission of her name from the prize list upset Kavya.
a) exclusion
b) oversight
c) absence
d) inclusion
Show answer
d) inclusion. Exclusion and oversight say much the same as omission; inclusion means putting her name in.
Multiple Choice Questions
1. An error of omission happens when you ____.
a) do the same thing twice by mistake
b) finish a task too early
c) do something wrong on purpose
d) forget to do something you should have done
Show answer
d) forget to do something you should have done
2. The recipe forgot to mention salt. This is ____.
a) a correction
b) an addition
c) an omission
d) a repetition
Show answer
c) an omission
