The word "yawny" is often used to describe a feeling of sleepiness or tiredness. Some synonyms for this feeling include drowsy, somnolent, slumberous, lethargic, and snoozy. These words all convey a sense of feeling tired or sluggish and can be used in various contexts such as describing a person, a room, or a situation. Other synonyms for "yawny" include soporific, dozy, and sluggish. It is important to note that different synonyms may be more appropriate depending on the context. For example, the word "drowsy" may be more suitable for describing a person who is struggling to stay awake, while "soporific" may be more appropriate for describing something that causes sleepiness.