1. You may titter if you try to stay quiet while being tickled, as almost no one can stay completely quiet in that situation.
2. Some people don’t like to laugh out loud so they titter instead, laughing a little bit instead of a lot.
3. The young girl held back a laugh and uttered a titter instead, unable to completely suppress her mirth.
4. Many people titter when they try to suppress a laugh in a serious situation and they cannot hold it back completely.
5. I didn’t want to laugh at my friend’s story, but I nevertheless gave a titter when I could hold it back no longer.