おも思omoいがけないigakenai
1.
Referring to something that occurs without prior anticipation, surprising the observer or participant.
2.
Describing an event or situation that deviates from what was anticipated, leading to an unexpected outcome.
3.
Indicating an element of chance or randomness, often resulting in unforeseen circumstances.
4.
Characterizing a moment or occurrence that is casual or informal, lacking serious intent or preparation.
Example:
彼は全く思いがけなく着いた。