Look at these two pairs:
- active, massive, native – all end with /ɪv/ (short i, like "liv")
- alive, drive, archive – all end with /aɪv/ (long i, like "ive" in "five")
Same letters at the end. Different sounds. Most learners guess wrong on at least one of these. Here is the rule that fixes it.
The Core Rule
It comes down to one question: Is -ive a suffix added to a word, or is -ive part of the original word?
Pattern 1: -ive as a Suffix → /ɪv/
When -ive is added to a verb or noun root to form an adjective, it is unstressed and reduces to /ɪv/.
| Root | + -ive | Sound |
|---|---|---|
| act | active | /ˈæktɪv/ |
| create | creative | /kriˈeɪtɪv/ |
| express | expressive | /ɪkˈspresɪv/ |
| nation | native | /ˈneɪtɪv/ |
| posit | positive | /ˈpɑːzətɪv/ |
Pattern 2: -ive in the Stressed Final Syllable → /aɪv/
When -ive carries the main stress of the word (or is part of a one-syllable root), it is pronounced /aɪv/, like the word "five".
| Word | Sound | Note |
|---|---|---|
| alive | /əˈlaɪv/ | Stress on -live |
| arrive | /əˈraɪv/ | Stress on -rive |
| survive | /sɚˈvaɪv/ | Stress on -vive |
| archive | /ˈɑːrkaɪv/ | Compound (arc + hive) |
| drive | /draɪv/ | One syllable |
| five | /faɪv/ | One syllable |
Quick Practice
How to Decide in 3 Seconds
Ask yourself two questions:
- Where is the stress? If the stress is on -ive, say /aɪv/. If the stress is earlier in the word, say /ɪv/.
- Can you remove -ive and still get a real word? Active → "act" works. So -ive is a suffix → /ɪv/. Alive → "al" is not a word. So -ive is part of the root → /aɪv/.
Common Words Sorted
Always /ɪv/ (suffix)
active, passive, massive, native, creative, expressive, attractive, sensitive, positive, negative, relative, cooperative, competitive, instinctive, supportive, productive, constructive, defensive, offensive, intensive, extensive, decisive, abusive, exclusive, inclusive, persuasive
Always /aɪv/ (stressed)
alive, arrive, survive, derive, deprive, contrive, archive, beehive, drive, hive, strive, thrive, dive, five, jive, live (verb only)
The Trap: "Live"
The word live has both pronunciations:
- Verb /lɪv/: "I live in Boston." – short i
- Adjective /laɪv/: "a live concert" – long i
Why? The adjective came from "alive" by losing the "a-". It kept the long i.
Two More Useful Patterns
-ative is Always /ətɪv/ (Reduced Suffix)
creative, relative, narrative, decorative, cooperative, alternative – the A often weakens to schwa /ə/.
Verb in -ive Often Has /aɪv/
If -ive is a verb on its own, it almost always says /aɪv/: arrive, survive, derive, contrive, deprive.
Quick Summary
- -ive added to a word (suffix, unstressed) = /ɪv/ → active, native, creative
- -ive in the stressed syllable or one-syllable word = /aɪv/ → alive, drive, archive
- If you remove -ive and get a real word, it is the suffix version (/ɪv/)
- "Live" the verb is /lɪv/, "live" the adjective is /laɪv/
Get this right and dozens of common adjectives stop sounding off.