fortify
Quenya
turya-
verb. strengthen
turya-
verb. *to strengthen, [ᴹQ.] to strengthen
turya-#
verb. fortify
torya-
verb. to strengthen
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Early Quenya
turya-
verb. to catch fire
A verb in the Qenya Lexicon of the 1910s glossed “catch fire” derived from the early root ᴱ√TUŘU [TUÐU] “kindle” (QL/96).
Qenya
turya-
verb. to strengthen
A verb for “strengthen” in the Quenya Verbal System (QVS) from 1948, the basis for the noun [ᴹQ.] turyande “strengthening” (PE22/110). It also appears in notes from 1957 within the (loosely translated) phrase Eldaron indor turyaner “the hearts of the Eldar were comforted / or obeyed” (NM/239), perhaps more literally “✱the hearts of the Eldar [were] strengthened”. If so, it seems this verb can be used intransitively for “to become strengthened, strengthen oneself”, but I think it can also be used transitively as in nár turya tinco “fire strengthens metal”. It also seems this verb can be used for metaphorical as well as physical strength.