Harrison, I think the following (in Spanish) will assist you: Apócope en Español There are a lot of cases of this. The adjectives are just a lovely special case. Claro se puede buscar en inglés también.... Zach H. Spanish/Latin Meridian Academy -- Brookline [Boston], MA Date: Tue, 2 Apr 2013 18:36:27 -0700 Subject: [ola] Primer and Tercer From: hlevinson@xxxxxxxxxxxx To: ola@xxxxxxxxxxxxx A student asked why the "o" is dropped from primero and tercero in front of singular, masculine nouns. She hypothesized that those were the only two ordinal numbers that end in -ro. But we know malo, bueno, alguno, ninguno, and grande get similar treatment. So, adjectives that end in -lo, -no, -ro, and grande? I cannot find an answer in my big, bad grammar book or online as of yet. Any help from one of you, perchance? Thank you.Harris -- Harris Levinson Teacher, Adviser Vashon Island High School Tel: 206.463.9171 x141