At first glance, ‘testify’ seems very serious and upright. It’s something you do in court with your hand on your heart as you swear to only tell the truth, and nothing but the truth. But like so many English words, ‘testify’ has a surprisingly cheeky backstory. And just in case you’ve got there before me, yes, it involves testicles.
Strap yourselves in.
The theory goes that in ancient Rome, men would swear oaths with their hands on their testicles to prove they were telling the truth. And from there, we get ‘testify’. (I also read one article that said two men taking an oath of allegiance would hold each other’s knackers. Don’t remember seeing that in Gladiator.)
It’s a great story. But is there any truth in it? Well, both ‘testify’ and ‘testicle’ do come from the same Latin root, ‘testis’. Although that probably doesn’t mean what you think it means – it actually translates as ‘witness’. Some etymologists think the anatomical sense came about because testicles were seen, metaphorically, as ‘witnesses’ to a man’s virility. Others say that the two words just sound similar. But frankly, the image of a Roman swearing on his love spuds was just too good for me to pass up.
So ‘testify’ and ‘testicle’ are genuinely related, although perhaps not in a holding-your-family-jewels-to-show-you’re-serious way. Same root, VERY different destinies. Either way, it’s probably not something to start doing if you ever find yourself in the witness box.