speedy, hasty, quick, prompt.

Occurring or appearing early in the day, season, year, etc.; spec. †(of a plant, crop, fruit, etc.) producing fruit or flowers early in the…

Early in season; = timely, adj. 1b. Obsolete.

Taking place, coming about, happening, etc., soon or quickly; early, speedy. Frequently U.S. dialect in a soon start (in the morning).

That takes place promptly. Obsolete.

Attentive to business; prudent, cautious, wide-awake, early, etc. In early use coupled with wise.