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!

Qenya 

rihta-

verb. to jerk, give quick twist or move, twitch, to jerk, give quick twist or move, twitch, *wrench

A verb in The Etymologies of the 1930s glossed “jerk, give quick twist or move, twitch” derived from the root ᴹ√RIK(H) “jerk, sudden move, flirt” (Ety/RIK(H)).

Conceptual Development: Earlier verbs for “jerk” include ᴱQ. kiltin “I jerk, tuck” in the Qenya Lexicon of the 1910s under the early root ᴱ√KLTL “tilt; fling” (QL/47) and ᴱQ. hyehta- “to jerk” in Early Qenya Word-lists of the 1920s (PE16/144). See also ric- “twist” for basic verbs of similar meaning.