suicidal vs suicide, What's the Difference?

Which to use

“suicidal” is an adjective and “suicide” is a noun - they look or sound alike but fill different roles in a sentence.

#12,869
“suicidal” frequency rank: #2,409
“suicide” frequency rank: 15278
confusion score

Side-by-Side Comparison

Feature	suicidal	suicide
Definition	Pertaining to suicide.	The act of intentionally killing oneself.

Where the eye mixes suicidal and suicide

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. suicidal runs 8 letters (CVVCVCVC) against suicide's 7 (CVVCVCV) - the length gap alone is often enough to separate them once you know to check it.

8 ch

suicidal

7 ch

suicide

Visual trap between suicidal and suicide

These two trip readers on the page rather than in the ear: suicidal is /ˌsuː.ɪˈsaɪ.dəl/ while suicide is /ˈs(j)uːɪˌsaɪd/. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 15278, derived from the frequency rank of both members and their visual similarity.

suicidal is recorded at frequency rank #12,869, classified as anadj, pronounced /ˌsuː.ɪˈsaɪ.dəl/. suicide is at rank #2,409, tagged as anoun, pronounced /ˈs(j)uːɪˌsaɪd/.

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 15278, this pair ranks #464,985 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of suicidal vs suicide

Shared letters: cdisu. Private to "suicidal": al. Private to "suicide": e.

"suicidal" · 8 letters · shape CVVCVCVC · "suicide" · 7 letters · shape CVVCVCV

Known mistypes of this pair

suicidal ← siucidal · ssuicidal · suciidal · suiccidal · suicdial · suiciadl · suicidall · suiciddal
suicide ← siucide · ssuicide · suciide · suiccide · suicdie · suicidde · suicied · suiicde

Frequently Asked Questions

Is swapping "suicidal" for "suicide" ever safe?

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

Frequency check: "suicidal" vs "suicide" - which ranks higher?

"suicide" is the more common of the two: it sits at frequency rank #2,409 in our English list, against #12,869 for "suicidal". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "suicidal" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "suicide" - compare definitions side by side with the headword page. Word entry
This pair ranks #464,985 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"suicidal" and "suicide" also get mixed up with nearby pairs, the highest-scored neighbour is "subside vs suicide". Nearby pair
Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #464,985 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.