| 時代遅れの | Something which is unfashionable because the trend is over. Hairstyles, etc. |
| 古くさい | Old-fashioned, but not related to trends. But still rude! An analog clock, a Pinto. |
| 古めかしい | ??? |
| 旧式の | Obsolete |
| 廃れる | Something dies out – metaphorically. A fad. A concept. Can you use this about people? ??? |