retroactive traffic sign on blue sky

retroactive traffic sign blue sky backdated retrospective after- -fact past-due historical backward-looking late postdated preceding anticipatory prior advanced antecedent time-traveling reminiscent foregone preexistent anterior precedent antediluvian foredated preexisting anticipative prevalent previous pretermitted early anticipated bygone precursive anachronistic preterit bypast back- -time proleptic forward-looking existent backward forward-thinking by-past former earlier pre-existent preteritive future-looking