Synonyms for longest at Thesaurus.com with free online thesaurus, antonyms, and definitions. Find descriptive alternatives for longest. Adjective. longest. superlative form of long: most long. 3 hours ago - Packed with treat after treat for sky-gazers, 2018 began with a once-in-a-lifetime Super Blue Blood Moon on 31 January, and a second lunar . 2 days ago - THE Blood Moon total lunar eclipse at the end of July is touted as the longest lunar eclipse of the century. Astronomers have spoken to . 2 days ago - The longest lunar eclipse of the century will take place this month – and it will turn the moon blood red. By chance, Mars will simultaneously . 14 hours ago - Thanks to Statcast, here are the longest home runs of his career in the Statcast era . Statcast: The Giants' longest homers of the 2017 season. The world's longest suspension bridges are listed according to the length of their main span (i.e. the length of suspended roadway between the bridge's towers). 15 hours ago - The longest total lunar eclipse of the 21st century is just a month away. The total phase of the 'blood moon' eclipse of July 27 will last 1 hour .