Strenuous laboratory

Two snippets from this week.

1) My class was practicing changing verbs into nouns into adjectives and vice versa. One word was strength, to be changed into an adjective. Most students wrote strong, but one wrote strenuous. To the extent that I have ever actually thought about it, I have never thought that strenuous is related to strong, so I had to check it quickly. No – it’s not. Online dictionaries didn’t give quite enough information, but Etymology Online shows the derivation of each, slightly confusingly, but convincingly.

Strong is from Proto-Germanic *strangaz and Proto-Indo-European *strenk-. (An asterisk with an etymology means that word has not been directly attested, but has been reconstructed by comparing forms in related languages.) Strenuous is from Latin strenuus and is possibly related to stern.

The student happily accepted his classmates’ answer of strong, but I told him that if he’d written strenuous in a test, I would have given him a mark. Continue reading