만약(에) + -(으)면: 만약에 비가 오면
if, in case, supposing
Example
만약 내일 비가 오면 소풍을 취소할 거예요.
If it rains tomorrow, we'll cancel the picnic.
Word parts
만 ten thousand+약 if
The first syllable means 'ten thousand', hinting at a slim chance, like 만일.
Good to know
만약 only sets up the condition; the verb still needs -(으)면 or -는다면.
Related words