結果のいかんによっては計画を中止する可能性もある。
- Depending on the outcome, the plan might be canceled.

結果のいかんによっては計画を中止する可能性もある。 meaning: Depending on the outcome, there is a possibility that the plan will be cancelled.

The sentence's structure follows a typical pattern for conveying a conditional relationship. ⚫︎ The core structure is: [Topic/Context] + によっては + [Result]. ⚫︎ This sentence uses 結果のいかん as the context, which roughly translates to "depending on the outcome". ⚫︎ いかん is a noun meaning "circumstances" or "matter," often used in set phrases to express conditions. ⚫︎ によっては functions as a conditional particle, expressing "depending on," "depending on the circumstances," or "if...then..." Example 天候によっては、試合は中止になります。 meaning: Depending on the weather, the game will be cancelled.

～のいかん is a fixed expression indicating "depending on...", "regardless of...", or "whether...or not...". ⚫︎ It is formed using the noun いかん, which means "circumstances," "situation," or "matter." ⚫︎ It is often used with a possessive particle の to modify a preceding noun. ⚫︎ It often appears with the particle に or によってはto indicate a condition. ⚫︎ The expression expresses a sense of uncertainty or the importance of a particular factor. Examples ⚫︎努力のいかんに関わらず、成功は保証されません。 meaning: Success is not guaranteed regardless of effort. ⚫︎能力のいかんによって、給料が決まります。 meaning: Your salary will be decided depending on your ability.

The particle は functions as the topic marker. ⚫︎ In the original sentence, it is used implicitly. ⚫︎ It often marks the topic of the sentence, indicating what the sentence is about. ⚫︎ It can replace other particles, often emphasizing the topic. In this case, it helps identify the scope of the conditional. Example 計画は、結果のいかんによっては中止されます。 meaning: The plan will be cancelled, depending on the outcome.

～可能（せい）もある is an auxiliary verb phrase indicating "there is a possibility that...", or "it is possible that...". ⚫︎ It is constructed using the adjective 可能（な）meaning "possible", and the noun 性（せい）meaning "possibility," along with the auxiliary verb ある. ⚫︎ The base form of verb or adjective is used before ～可能（せい）もある to show the possibility of the action. ⚫︎ It indicates that a certain outcome is possible but not certain. ⚫︎ The sentence uses it to suggest that canceling the plan is a possibility based on the results. Example 雨が降る可能性もあります。 meaning: It is possible that it will rain.

中止する is the plain, or dictionary, form of the verb, which is used here. ⚫︎ The verb 中止する means "to cancel". ⚫︎ It's used in its plain form because it is modifying the possibility, with the phrase 可能性もある。 ⚫︎ Plain form verbs are common in conditional or modal expressions like this. Example 会議を中止する。 meaning: To cancel the meeting.