Quasi

As if

Quater in die (Q.I.D) - Take four times a day
Quem di diligunt, adolescens moritur - Whom the gods love die young. (only the good die young)
Quemadmodum possums scire utrum vere simus an solum sentiamus nos esse? - How are we to know whether we actually exist or only think we exist?
Quemadmoeum gladis nemeinum occidit, occidentis telum est - A sword is never a killer, it's a tool in the killer's hands. (Seneca)
Qui bene cantat, bis orat - He who sings well, prays twice
Qui bono? - Who benfits?