Sometimes when I see new words in English or other languages I can immediately break them down into their component parts and work out their roots, but other times I just accept words as whole entities without trying to work out their derivation.

One such word in Welsh is arfordir, which I hadn’t tried to analyse before. Last weekend, however, I was explaining some Welsh words to a friend who recently moved to Cardiff and who wants to learn Welsh, so I was in the right frame of mind, and the probable etymology of that word jumped out at me – ar (on, by) + môr (sea) + tir (land), so it’s “land by the sea” or the coast. This is correct, according to the Geiriadur Prifysgol Cymru.

Another etymology I discovered today is the word competitor, which comes from the Middle French compétiteur (rival, competitor), from the Latin competītor (rival, competitor, adversary, opponent; plaintiff), from con (with) and petītor (seeker, striver, applicant, candidate, claimant, plaintiff, suitor, wooer).

Petītor comes from petere (to make, seek, aim at, desire, beg, beseech), from the Proto-Indo-European *peth₂- (to fall, fly), which is also the root of the English word petition, and the Spanish word pedir (to ask for) [source]