Christening rhymes with:
glistening, listening, fastening, glistening, hastening, jettisoning, lessening, listening, loosening, worsening
Christening sounds like:
carstens, cherrystones, christianize, christians, christine's, christman's, christmas, christmas', christmases, correcting, corrections, correctness, crackdowns, cresting, cristiani's, crocheting, crookedness, crusading