You already know a thousand English words ending in -ic or -ics. 'Electric, fantastic, specific, economic, traffic, magic.' Did you know they all follow the same stress rule? Getting this one rule right will fix your stress on an enormous portion of English vocabulary.
The Rule
Words ending in -IC or -ICS put the primary stress on the syllable immediately before the ending. Linguists call this the penultimate (second-to-last) syllable.
| Word | Syllables | Stressed |
|---|---|---|
| fantastic | fan-TAS-tic | TAS |
| economic | e-co-NO-mic | NO |
| specific | spe-CI-fic | CI |
| mathematics | ma-the-MA-tics | MA |
| linguistic | lin-GUI-stic | GUI |
The rule is completely reliable in modern English. Once you spot an -ic or -ics ending, your stress decision is already made.
Practice Words
Why the Rule Exists
The suffix '-ic' came into English from Greek through Latin and French, where the stress naturally fell on the syllable before the suffix. English kept this pattern. So every time you add '-ic' to a root, stress shifts to the syllable right before it.
The stress shift is predictable
| Root | Stress | +ic → new stress |
|---|---|---|
| ECOnomy | first | ecoNOMic |
| PHOtograph | first | photoGRAPHic |
| DEMocrat | first | demoCRATic |
| DIagram | first | diagraMMATic |
The root's original stress disappears. The '-ic' pulls stress to itself minus one.
Two-Syllable -IC Words
In two-syllable words, the rule places stress on the first syllable, since there's only one syllable before '-ic'.
The Exceptions (Only a Handful)
Almost nothing escapes this rule, but there are a few long-established exceptions:
- ARabic /ˈɛɹəbɪk/ — stress on 'A', not 'ra'
- LUnatic /ˈlunətɪk/ — stress on 'LU', not 'na'
- CAtholic /ˈkæθəlɪk/ — stress on 'CA', not 'tho'
- POlitics /ˈpɑlətɪks/ — stress on 'PO', not 'li' (3rd-from-last)
- RHEtoric /ˈɹɛtəɹɪk/ — stress on 'RHE', not 'to'
- LImerick /ˈlɪməɹɪk/ — stress on 'LI'
- HEretic /ˈhɛɹətɪk/ — stress on 'HE'
Notice the pattern: these are mostly older words from Greek or Latin roots that kept their original stress. They all stress the third-to-last syllable instead of the penultimate one.
But compared to the thousands of regular -ic words, these exceptions are tiny. If you apply the rule to unfamiliar -ic/-ics words, you'll be right more than 95% of the time.
How to Use This Rule
- See -ic or -ics at the end? Cover the last syllable with your finger.
- Stress whatever syllable is just before your finger.
- Say the word. You're done.
Try it now
Apply the rule to these (the stressed syllable is before -ic):
- aquat-ic → a-QUA-tic
- strateg-ic → stra-TE-gic
- systemat-ic → sys-te-MA-tic
- autentic → au-THEN-tic
- economics → e-co-NO-mics
Why This Rule Is a Superpower
English has thousands of -ic and -ics words: all the sciences (physics, economics, mathematics, linguistics, genetics), all the adjectives from nouns (atom→atomic, poet→poetic, hero→heroic, allergy→allergic), plus hundreds of everyday words. Learning one rule instantly unlocks accurate stress on all of them.
Quick Recap
- Words ending in -ic or -ics stress the syllable before the ending.
- Two-syllable words get first-syllable stress (MAgic, TRAFfic, MUsic).
- Longer words shift stress away from the root to the penultimate syllable (ECOnomy → ecoNOMic).
- Few exceptions exist (ARabic, LUnatic, CAtholic, POlitics).
- Apply this one rule and improve your stress on thousands of words at once.
Stress is a huge part of sounding native. This is one of the highest-leverage rules in English.