| a. | 1. | Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign. |
| 2. | (Nat. Hist.) Out of the proper or usual place; | |
| 3. | (Bot.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; - applied to foreign plants. | |
| 4. | (Med.) Acquired, as diseases; accidental. |
| Adj. | 1. | adventitious - associated by chance and not an integral part; "poetry is something to which words are the accidental, not by any means the essential form"- Frederick W. Robertson; "they had to decide whether his misconduct was adventitious or the result of a flaw in his character" Synonyms: accidental |
ADVENTITIOUS, adventitius. From advenio; what comes incidentally; us adventitia bona, goods that, fall to a man otherwise than by inheritance; or adventitia dos, a dowry or portion given by some other friend beside the parent.
accessory, accidental, additional, adscititious, aleatory, appurtenant, ascititious, auxiliary, casual, causeless, chance, chancy, circumstantial, collateral, conditional, contingent, destinal, dicey, extra, fatal, fatidic, fluky, fortuitous, iffy, incidental, indeterminate, inessential, nonessential, occasional, provisional, risky, secondary, subsidiary, superadded, superfluous, supervenient, supplemental, supplementary, uncaused, undetermined, unessential, unexpected, unforeseeable, unforeseen, unlooked-for, unpredictable