Hesitation, fillers and the IELTS Fluency criterion: what actually costs marks

The Fluency and Coherence descriptors draw a line candidates rarely notice: band 7 "may demonstrate language-related hesitation" while band 8's hesitation is "content-related". The criterion never demands the absence of pausing — native speakers pause constantly — it asks what the pause is for. A silence while you choose what to say reads as thought; a silence while you search for how to say it reads as a lexical gap. Examiners are trained to tell them apart, and mostly they can, because the two sound different: content pauses come at clause boundaries with steady intonation; word-search pauses land mid-phrase, often with a dying tone and a restarted sentence. Two full Part 3 answers with every pause marked and graded are in what band 7 fluency and coherence sounds like.

That reframe changes the training goal. You are not drilling yourself into pauselessness — speed without pauses at band 6 vocabulary is just fast band 6. You are converting mid-phrase word hunts into boundary pauses plus repair moves.

Fillers: the honest hierarchy

• Silence at a clause boundary — fine in moderation; better than noise.
• Native hesitation noises (um, uh, I mean, you know) — neutral in small doses; a per-sentence tic becomes the "repetition and self-correction" band 6 explicitly names.
• Thinking phrases (that's a good question; let me think; I'd say…; well, off the top of my head) — actively useful: they buy 2–3 seconds, fill the channel, and are themselves fluent English. But they are seasoning, not stock — the same opener before every Part 3 answer reads as the memorised formula it is.
• Fillers replacing content — the failure mode: you know, like, it's kind of, sort of thing stacked so densely the proposition never arrives. This caps Coherence, not just Fluency.

Repair moves worth drilling

The difference between a 6.5 and a 7.5 under pressure is usually not vocabulary size but recovery behaviour when a word goes missing:

• Paraphrase past it: "the… the machine that measures earthquakes" — credited as communication, and listed in the descriptors as a strength (Lexical Resource: "uses paraphrase effectively") — the paraphrase moves that actually work shows how to build the habit.
• Downgrade and continue: swap the precise word for a common one and keep the clause moving — devastating → really bad costs a sliver of Lexical Resource and saves the Fluency mark the five-second hunt would have burned.
• Abandon cleanly: "—actually, let me put it differently: …" One visible restart is self-correction; three restarts of the same sentence is the band 6 descriptor verbatim.