kavanah
Heartfelt intent during prayer, as opposed to roteness.
uncountable
The Gaon of Vilna (Ha-Gra) also opposed saying the formula Leshaym Yihud as well as Hineni mukhan umezuman ("Behold I am prepared and ready") since precepts do not require kavanah.
Where it comes from
Borrowed from Hebrew כַּוָּנָה (kavaná, “intention, direction”).
Adapted from the Wiktionary entry kavanah (CC BY-SA 4.0).