TOEIC Link Part 5: credible versus creditable

Credible and creditable grow from the same Latin root — credere, "to believe" — and Part 5 uses that shared stem to blur the line between them. But they answer different questions: one asks can I believe this?, the other asks does this deserve praise? Once you read the slot for whether the sentence is about trustworthiness or about merit, the family resemblance stops being a trap. For the general discipline of letting meaning, not sound, decide these items, see word choice versus word form.

The core rule: believable, or praiseworthy

credible is an adjective meaning believable, trustworthy, or convincing: The witness gave a credible account. / The company issued a credible forecast backed by data. It describes something you can accept as true or reliable — a source, a claim, a threat, an explanation. The related adverb is credibly; the noun is credibility.
creditable is an adjective meaning deserving credit or praise; reasonably good: The team turned in a creditable performance despite the setbacks. / It was a creditable effort for a first attempt. It describes something that reflects well on the doer — a result, an effort, an achievement. The related adverb is creditably.

A memory hook: credible ends like possible and sensible — it is about whether something can be believed. creditable contains the word credit plus -able — it is about earning credit (praise). If the slot is about believing, it is credible; if it is about praising, it is creditable.

How to read the slot

Belief or trust is at stake → credible. When the sentence has a source, a claim, a witness, a threat, a forecast, and the point is whether to trust it: Investors found the projection credible.
Praise or merit is at stake → creditable. When the sentence has a performance, an effort, a result, a showing, and the point is that it deserves recognition: The rookie made a creditable debut.
Test with a paraphrase. Try "believable" — if it fits, choose credible. Try "praiseworthy / respectable" — if that fits instead, choose creditable.

Common Part 5 traps

Reports, evidence, and sources favor credible. Sentences about whether a claim can be trusted point to believability. A creditable distractor is the classic swap, but a data source is judged on trust, not praise.
Performances and efforts favor creditable. When the sentence evaluates how well someone did, the merit sense applies. A credible distractor misreads the sentence as being about belief.
Beware the overlap in tone. Both words are positive, so tone alone will not separate them — you must read the object. Ask whether the sentence is judging truth (credible) or quality of effort (creditable).

Quick check

Decide which adjective fits, then confirm with the "believable" versus "praiseworthy" test.

The auditor concluded that the financial statements were (blank).
Despite limited resources, the branch posted (blank) quarterly results.
Analysts questioned whether the growth estimate was (blank).
Her handling of the crisis was a (blank) achievement under pressure.

Answers: 1. credible (believable statements) — 2. creditable (praiseworthy results) — 3. credible (believable estimate) — 4. creditable (praiseworthy achievement).

The one-line takeaway

If the slot is about whether something can be believed, it is credible. If it is about whether something deserves praise, it is creditable. The shared root is the trap — anchor the choice to the object (a claim to trust versus an effort to praise) and this question decides itself. For another pair where surrounding tone tempts the wrong choice, review the reasoning pattern in adverse versus averse, where reading the subject of the sentence breaks the tie.