Incorrect spelling

quaterly

Incorrect spelling, explanation: quaterly is the incorrect form of an adverb because the consonant r is missing after the vowel a. The users of English may make this mistake because of its pronunciation. In the UK the consonant r, occurring at the end of the syllable, is not heard. But the correct spelling of this word is with r as quarterly not quaterly.


Correct spelling

quarterly

Correct spelling, explanation: quarterly is an adverb derived from Latin as quartarius or quartus, meaning the fourth part. The first known use of that form was in Middle English in the 14th century. This word has not changed and quarterly is correct, not quaterly.

Definition of quarterly:
adjective/adverb/noun, when something is quarterly, it happens once every three months,
The results of the project are reported quarterly.
The meeting is held quarterly to discuss important issues.
The donation will be paid quarterly.