Sindarin
maegra-
verb. to sharpen
Quenya
laiceta-
verb. to sharpen
maicata-
verb. to sharpen
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!
Gnomish
lectha-
verb. to sharpen
A neologism coined by Paul Strack posted in 2018 specifically for Eldamo, a transitive and intransitive verb based on maica “sharp”. It has a transitive weak past maicatáne (maicatane-) “sharpened [something]” and intransitive half-strong past maicante “[became] sharpened”; hat-tip to Vyacheslav Stepanov for these past forms. Petri Tikka instead suggested [ᴺQ.] laiceta- “to sharpen” in PPQ (PPQ) based on [ᴹQ.] laika “keen, sharp, acute”, but that is the wrong kind of “sharp”: sharp senses not sharp swords.