баярлах (bajarlax). <span class="searchmatch">байрлх</span> • (bayrlx) to be joyful; to rejoice; to be glad байрлҗанав (bayrljanav) Muniev, B. D. (1977) “<span class="searchmatch">байрлх</span>”, in Калмыцко-русский...
Kalmyk phrasebook first-person singular present progressive of <span class="searchmatch">байрлх</span> (bayrlx, “to be glad”). Probably a semantic loan from Mongolian баярлалаа (bajarlalaa)...