How to Use "useless" with Example Sentences

1. There is much pleasure to be gained from useless knowledge .
2. Your negative thoughts most negative emotions are completely useless .
3. This makes them worse than useless in a world characterised by persistent financial instability .
4. You could try to bribe your parents , but threats will be useless because they are doing you a favour .
5. One explanation is that most rna transcripts are useless , being mere " noise " generated by overzealous enzymes that don 't know when to stop transcribing dna into rna .