The phrase "am tardy" is spelled using the International Phonetic Alphabet (IPA) as /æm ˈtɑːrdi/. The initial sound, /æm/, is pronounced like the vowel sound in "cat," followed by the stressed /ˈtɑːrdi/ which is pronounced with a long "a" sound as in "car" and an unstressed "i" sound at the end, similar to the sound in "happy." "Am tardy" is a way of admitting to being late, and is commonly used in formal settings such as schools and workplaces.
The phrase "am tardy" is not a word, but rather a combination of the verb "am" and the adjective "tardy". "Am" is the first person singular present indicative form of the verb "to be", and "tardy" means being late or delayed. The word "tardy" originated from the Old French word "tardif", which means slow or coming late. It can be traced back to the Latin word "tardus", meaning sluggish or slow.