Adjective Conjugation

Remember to drop the final い of adjectives before you add the conjugations (except for plain old です, which isn't exactly a conjugation per se). To make the forms in the chart below casual, drop です off. Like noun conjugations, there are two alternatives for the negative forms. The first alternative ends in ~nai or ~nakatta. You can drop "desu" for casual style speech. The second alternative ends in ~masen or ~masen deshita. Both of these are appropriate in polite (teineigo) speech, and you cannot make them casual style.