Over the last few days, dictionary.com's excellent Word of the Day service has provided a very interesting sequence of words, especially when one considers that they intersect with Valentine's Day...
Feb:
11th: spurious: not genuine; false; illegitimate.
12th: waylay: to ambush or accost.
13th: ingenue: a naive girl or young woman, or an actress representing such a person.
14th: osculation: the act of kissing; a kiss.
15th: voluptuary: a person devoted to luxury and the gratification of sensual appetites.
16th: enmity: hatred; ill will.