sad vs se, What's the Difference?

Which to use

“sad” is an adjective and “se” is a conjunction - they look or sound alike but fill different roles in a sentence.

#13,385
“sad” frequency rank: #16
“se” frequency rank: 13401
confusion score

Side-by-Side Comparison

Feature	sad	se
Definition	triste	indica hipótese

Where the eye mixes sad and se

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

sad

2 ch

Why the eye confuses sad with se

These two trip readers on the page rather than in the ear: sad is /sæd/ while se is /sɨ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 13401, derived from the frequency rank of both members and their visual similarity.

sad is recorded at frequency rank #13,385, classified as anadj, pronounced /sæd/. se is at rank #16, tagged as aconj, pronounced /sɨ/.

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 13401, this pair ranks #58,955 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sad vs se

Shared letters: s. Private to "sad": ad. Private to "se": e.

"sad" · 3 letters · shape CVC · "se" · 2 letters · shape CV

Frequently Asked Questions

Do "sad" and "se" mean the same thing in a sentence?

No - they are not even the same part of speech. "sad" is an adjective and "se" a conjunction, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "sad" vs "se" - which ranks higher?

"se" is the more common of the two: it sits at frequency rank #16 in our Portuguese list, against #13,385 for "sad". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "sad" and "se" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "sad" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "se" - compare definitions side by side with the headword page. Word entry
This pair ranks #58,955 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"sad" and "se" also get mixed up with nearby pairs, the highest-scored neighbour is "sad vs soap". Nearby pair

Confusion rank #58,955 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.