Antonyms of adj weeklong

1 sense of weeklong

Sense 1
weeklong, seven-day -- (lasting through a week; "her weeklong vacation")

INDIRECT (VIA long) -> short -- (primarily temporal sense; indicating or being or seeming to be limited in duration; "a short life"; "a short flight"; "a short holiday"; "a short story"; "only a few short months")

Similarity of adj weeklong

1 sense of weeklong

Sense 1
weeklong, seven-day -- (lasting through a week; "her weeklong vacation")
       => long (vs. short) -- (primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified; "a long life"; "a long boring speech"; "a long time"; "a long friendship"; "a long game"; "long ago"; "an hour long")