Incidental is most often used in the sense "being likely to ensue as a chance or minor consequence," or "minor" (as in "there were some incidental expenses that I paid myself").

INCIDENTAL definition: happening or likely to happen in an unplanned or subordinate conjunction with something else. See examples of incidental used in a sentence.

INCIDENTAL meaning: 1. less important than the thing something is connected with or part of: 2. directly connected…. Learn more.

Occurring or likely to occur as an unpredictable or minor consequence: "the principle that even annoying, intrusive, and offensive speech is to be protected by the courts and tolerated by the …

Definition of incidental adjective from the Oxford Advanced Learner's Dictionary. incidental (to something) happening in connection with something else, but not as important as it, or not …

WordReference Random House Learner's Dictionary of American English © 2025 in•ci•den•tal /ˌɪnsɪˈdɛntəl/ adj. likely to happen in an unplanned manner: Incidental expenses were paid for …

6 days ago · incidental (comparative more incidental, superlative most incidental) Loosely associated; of limited relevance except indirectly; only accidentally related.

If one thing is incidental to another, it is less important than the other thing or is not a major part of it.

INCIDENTAL meaning: happening as a minor part or result of something else often + to

Incidental means secondary in time or importance. If you lose weight because you moved and must walk further to school, the weight loss was incidental to the move.