Which to use
“placid” is an adjective and “plasmid” is a noun - they look or sound alike but fill different roles in a sentence.
- #28,671
- “placid” frequency rank
- #42,823
- “plasmid” frequency rank
- 71494
- confusion score
Side-by-Side Comparison
| Feature | placid | plasmid |
|---|---|---|
| Definition | calm and quiet; peaceful; tranquil | A loop of double-stranded DNA that is separate from — and replicates independently of — the chromosomes; such loops are most commonly found in bacteria, but they are also sometimes found in archaeans and eukaryotic cells, and they are used in genetic engineering as a vector for gene transfer. |
Where the spellings diverge
Shared letters are muted; the letters that actually set placid and plasmid apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
placid and plasmid form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 71494, derived from the frequency rank of both members and their visual similarity.
placid is recorded at frequency rank #28,671, classified as anadj, pronounced /ˈplæs.ɪd/. plasmid is at rank #42,823, tagged as anoun, pronounced /ˈplæzmɪd/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 71494, this pair ranks #46,469 of 530,003 scored English confusable pairs - among the most confusable pairs.
Frequency comparison
Frequently Asked Questions
Can "placid" and "plasmid" be used interchangeably?
Remembering placid vs plasmid
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “placid”; for a noun, it's “plasmid”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “placid” entry
- Browse more pairs most likely to be confused. Most confusable