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Check your academic writing for grammar, spelling, punctuation, and style errors instantly. Get detailed corrections with explanations — all for free.
Checks for grammar errors, subject-verb agreement, tense consistency, and spelling mistakes. Best for general proofreading.
Our AI checks your text across four key areas to ensure error-free academic writing
Subject-verb agreement, tense consistency, article usage, pronoun references, sentence fragments, and run-on sentences.
Misspelled words, commonly confused words (affect/effect, their/there), British vs American spelling, and academic terminology.
Comma placement, semicolons, colons, apostrophes, quotation marks, hyphens, and end-of-sentence punctuation errors.
Passive voice overuse, wordiness, informal language, weak modifiers, and hedging language for scholarly writing.
Our expert editors can proofread, edit, and polish your entire assignment — grammar, structure, referencing, and academic tone.
Get Expert ProofreadingEven the strongest academic writers make grammar mistakes under deadline pressure. Understanding the most common errors can help you catch them before submission and improve the overall quality of your essays, dissertations, and coursework.
One of the most frequent errors in academic writing is mismatching subjects and verbs, especially in complex sentences. When a prepositional phrase separates the subject from the verb, writers often match the verb to the nearest noun rather than the actual subject. For example, writing "the results of the study shows" instead of "the results of the study show" is a classic mistake.
A comma splice occurs when two independent clauses are joined with only a comma. This is particularly common in academic writing when students try to connect related ideas. The fix is straightforward: use a semicolon, add a coordinating conjunction after the comma, or separate the clauses into two sentences.
Dangling modifiers are phrases that do not clearly relate to the word they are intended to modify. In academic writing, this often happens with introductory participial phrases. For instance, "Having analysed the data, the results were surprising" incorrectly suggests the results did the analysing.
Academic writing requires careful attention to verb tenses. Literature reviews typically use the past tense or present perfect, while methodology sections use the past tense. Shifting between tenses within a paragraph without reason confuses readers and weakens your argument.
Vague pronoun references — where "this", "it", or "they" lack a clear antecedent — are among the most common issues markers flag. Always ensure every pronoun has an unambiguous noun it refers to. In academic prose, it is often better to repeat the noun rather than risk ambiguity.
Long, complex sentences are common in academic writing, but without proper punctuation they become run-on sentences. Break lengthy sentences into manageable units. A good rule of thumb is that if a sentence exceeds 35 words, consider splitting it. Use our grammar checker above to identify run-on sentences in your work automatically.