Incorrect spelling, explanation: the form aceing is incorrect because of standard English spelling rules for adding suffixes to verbs that end with a silent -e. When a verb ends in a silent -e (like ace, bake, write, etc.), the -e is typically dropped before adding the suffix -ing. This rule ensures that the word maintains its natural pronunciation and avoids unnecessary complexity in spelling. This rule has exceptions, such as when the silent -e is needed to preserve a soft -g or -c sound (e.g., peaceable) or in certain archaic words. However, ace does not fall into these exceptions, so acing is the correct form.

Correct spelling, explanation: the correct form is acing. This word comes from the verb ace, meaning to perform exceptionally well, typically in a test, task, or activity. The spelling follows standard rules for adding -ing to verbs: simply add the suffix without changing the base word (since ace ends in a silent -e, the -e is dropped before adding -ing). The form aceing is incorrect and not used in English, because it could cause confusion in pronunciation and spelling conventions.

Definition of acing:
1. Verb (present participle), to do very well in an exam
She has been studying diligently all semester, and now she’s acing her final exams with ease.
John is acing every challenge in his new job, impressing both his team and his manager.
2. Noun (gerund), the act or result of acing something
His consistent acing of every math test made him the top student in his class.
The tennis player’s acing during the match left his opponent struggling to keep up.

Collocations with acing:
Some of the most commonly used collocations include:
1. Acing an exam/test: performing exceptionally well on an exam or test.
She spent weeks preparing and ended up acing the math test.
2. Acing a challenge: successfully overcoming a difficult situation or task.
Despite the tight deadline, he worked hard and ended up acing the project challenge.
3. Acing an interview: performing extremely well during a job interview.
With her strong communication skills, she had no trouble acing the interview.
4. Acing a game/match: dominating or performing excellently in a game or match.
The team worked together flawlessly, acing the final basketball game.

Incorrect spelling