催促[saisoku] pressing
催促状[saisokujou] dun
促す[unagasu] to urge
促音[sokuon] assimilated sound (small "tsu" in Japanese)
促進[sokushin] promotion

促進剤[sokushinzai] accelerant
促成[sokusei] promotion of growth
促成栽培[sokuseisaibai] raising out-of-season crops with artificial heat
督促[tokusoku] urge
偓促[akuseku] fussily