2: Plural form of 'sign.'
3: A sharp sound made by small birds or insects.
5: A brief communication that is written or spoken.
11: 'I have to go to the ______ office to get my flu shot.'
13: Antonym of 'uninvited.'
14: Synonym of 'complain'
16: If it's not a fact, it is probably an ______.
19: ______ showers bring May flowers.
20: Once thought to be one of four elements composing the universe; dirt.
25: An informal term for a father; rhymes with 'sad.'