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1. Of, relating to, or dependent on circumstances.
2. Of no primary significance; incidental.
3. Complete and particular; full of detail: a circumstantial report about the debate.
4. Full of ceremonial display.

cir′cum·stan′tial·ly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.circumstantially - according to circumstances; "he was convicted circumstantially"
2.circumstantially - insofar as the circumstances are concerned; "the account was circumstantially accurate"
3.circumstantially - in minute detailcircumstantially - in minute detail; "our inability to see everything minutely and clearly is due merely to the infirmity of our senses"
4.circumstantially - without advance planningcircumstantially - without advance planning; "they met accidentally"
References in classic literature ?
In the past he had often tried not to think too circumstantially of his plans for the future, it was only discouraging; but now that his goal was so near he saw no harm in giving away to a longing that was so difficult to resist.
He could remain silent for hours without being at all put out of countenance himself or making others uncomfortable, but as soon as the conversation concerned himself he would begin to talk circumstantially and with evident satisfaction.
And having gone so far, he related circumstantially all that had passed upon the night in question.
He entered into a detail of the duties that would attend the situation, and circumstantially mentioned the reward, and all those points which are deemed of importance among men of business.
Sikes condescended to take some notice of the young gentlemen; which gracious act led to a conversation, in which the cause and manner of Oliver's capture were circumstantially detailed, with such alterations and improvements on the truth, as to the Dodger appeared most advisable under the circumstances.
A little more and he /might/ have given himself away completely, circumstantially.
At one moment reclining sideways upon the mat, and leaning calmly upon his bended arm, he related circumstantially the aggressions of the French--their hostile visits to the surrounding bays, enumerating each one in succession--Happar, Puerka, Nukuheva, Tior,--and then starting to his feet and precipitating himself forward with clenched hands and a countenance distorted with passion, he poured out a tide of invectives.
All these discoveries were now related to Ralph, circumstantially, and in detail.
This acceleration, experts said, circumstantially points to climate change, which has -- over the same period -- warmed the Arctic region twice as fast as the global average.
The Court of Appeals noted that appellant admitted to entering a garage without permission and starting a fire with a lighter, and held that these facts did not support appellants guilty plea because they did not address his intent; he admitted to no facts that would directly or circumstantially establish that he intended to damage or destroy the garage.
The NAB reference is criminal proceedings where the law provides for rejuvenation of a case if new substantive material or circumstantially evidence crops up at any stage.
In an environment of scarce community resources that could help adolescents and families cope with crack use, full-time adolescent care institutions operate as support because, although they do not show long-term effectiveness, some of them, such as shelters, provide, albeit circumstantially, adolescents with periods of abstinence and some possibilities of social reintegration, as can be seen through the narrative of Aluizio: People here [shelter] who help me, sometimes scold me and all that, but it's for my own sake, they help me a lot here, they want to see me well, they help me with work, my studies, there's no better place than this, I do not even feel like using anything at all.