Not done on purpose
The definition of casual is someone or something relaxed, occasional, not planned or informal.
The definition of contingent is something that depends on something else happening, or something that is possible or by chance.
The definition of chance is accidental or not expected or planned.
Showing a lack of consideration:
Exhibiting a lack of attention; not attentive.
Exhibiting a lack of thought:
Paying attention; attentive; heedful.
The definition of deliberate is doing something on purpose and with careful thought.
Showing care for the needs or desires of others; caring or courteous.
The definition of fortuitous is happening by chance.
Find another word for inadvertent. In this page you can discover 28 synonyms, antonyms, idiomatic expressions, and related words for inadvertent, like: accidental, surprise, unpremeditated, unintended, unwitting, unintentional, unmeant, unplanned, casual, contingent and negligent.