An explanatory parenthetical is the short phrase in parentheses at the end of a legal citation that tells the reader why the source matters, and under Bluebook Rule 1.5 explanatory parentheticals in legal citations usually begin with a lowercase present participle, sit near the end of the citation string, and follow a fixed order when more than one parenthetical attaches to the same source. The current edition of the Bluebook is the 22nd.
When To Add One
Add a parenthetical whenever the connection between your proposition and the cited source isn’t obvious. A case that runs forty pages across a dozen issues needs a note telling the reader which piece of the decision supports your point.
Some signals almost require one. “See also” and “cf.” carry less weight than direct authority, so the parenthetical explains why the source is relevant or why the analogy holds. “Compare … with …” needs a parenthetical on each side so the contrast is visible. “See generally” benefits from a note describing what the reader will find.1Georgetown Law. Bluebook Signals Explained
Parentheticals also flag the weight of the authority. If the useful language came from a dissent or concurrence rather than the holding, the parenthetical says so, so the court doesn’t mistake persuasive language for binding precedent.
How To Write the Parenthetical
Rule 1.5(a)(i) calls for most explanatory parentheticals to start with a present participle: “holding that,” “finding that,” “explaining that,” “rejecting,” “declining to reach.” That opening word stays lowercase.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
When the meaning is clear from context, a short descriptive phrase works instead of a participle. Something as brief as “(pre-filing injunction)” can be enough. The first word still stays lowercase unless it’s a proper noun.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
There’s one capitalization exception. If the whole parenthetical is a quotation of one or more complete sentences, capitalize the first word and put the closing punctuation of the quoted sentence inside the parenthesis. Standard quotation rules apply: keep the language faithful to the source, mark any alterations, and use quotation marks around borrowed text.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
Where It Goes in the Citation
The explanatory parenthetical sits near the end of the citation. The order is case name, reporter volume and page, pinpoint page, court and date in parentheses, then your explanatory parenthetical, then any subsequent history. Leave a space between the closing parenthesis of the date and the opening parenthesis of the explanation.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
Subsequent history trips people up. Notes like “aff’d,” “rev’d,” or “cert. denied” follow the explanatory parenthetical, not the other way around.3Mitchell Hamline School of Law. Bluebook Citation
In a string cite separated by semicolons, each parenthetical stays attached to its own source. Shuffling them, or letting one case’s explanation drift onto another, makes the citation misleading.
Ordering Multiple Parentheticals on One Source
When a single citation carries more than one parenthetical, Rule 1.5(b) sets the sequence. Left to right:2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
- Date parenthetical (court and year)
- Hereinafter designation
- Weight-of-authority indicators: (en banc), (Lastname, J., concurring), (plurality opinion), (per curiam)
- Alteration and omission notes: (alteration in original), (emphasis added), (footnote omitted), (citations omitted)
- Quoting parenthetical
- Internal quotation marks omitted
- Citing parenthetical
- URL
- Explanatory parenthetical
- Subsequent history
The most common sequencing error is placing the explanatory parenthetical before a weight-of-authority indicator. When you describe the holding before noting that the language came from a dissent, the reader absorbs your characterization first and learns it wasn’t the majority view second.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
Quoting and Citing Parentheticals
When the case you cite is itself borrowing from an earlier source, Rule 1.5(a)(ii) requires you to show that chain. A “quoting” parenthetical means the case reproduced language from an earlier decision verbatim; a “citing” parenthetical means the case referenced an earlier source without quoting it. Format them as “(quoting [full citation])” or “(citing [full citation])”, treating the internal reference as a citation clause.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
You only need to show one layer of recursion. If Case A quotes Case B, which itself quoted Case C, identify Case B and stop there. Within the ordering hierarchy, “quoting” comes before “citing” when both attach to the same source.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
Alteration and Omission Tags
When you modify quoted language, flag the change with its own parenthetical between the weight-of-authority indicators and the quoting or citing parentheticals. The standard phrases are (alteration in original), (emphasis added), (footnote omitted), (citations omitted), and (internal quotation marks omitted).4Georgetown Law. Everything You Wanted to Know that the Bluebook Does Not Tell You Clearly
Each one has a specific job. “(alteration in original)” means the source you’re quoting already contained an alteration. “(emphasis added)” means the italics or emphasis are yours. “(footnote omitted)” and “(citations omitted)” tell the reader you cut a footnote or embedded citation from the quoted passage. “(internal quotation marks omitted)” signals that the passage had nested quotation marks from a prior source that you dropped for readability.
Mistakes To Avoid
The biggest mistake isn’t a formatting slip. It’s using parentheticals in place of analysis. A parenthetical can summarize what a court held, but it can’t explain why that holding controls your client’s facts. A string of citations with parentheticals may look thorough, but a court wants to see you connect the law to the facts in your own words.2Georgetown Law. Explanatory Parentheticals: Bluebook Rules and Placement
On formatting, the recurring errors are capitalizing the first word of a participle-based parenthetical, placing the explanatory note before a weight-of-authority indicator, and forgetting the period inside the closing parenthesis when the parenthetical is a full quoted sentence. A quick pass through your citation strings against the Rule 1.5(b) hierarchy catches most sequencing problems before the brief goes out.