Found 11 stronger alternatives to upgrade your writing.
Only / no more than
Nuance: Only
Common; can change focus depending on placement.
Boring
I just wanted to ask one question before the test started.
Better
I only wanted to ask one question before the test started.
At the moment
Nuance: At the moment
Natural when just means at the moment.
Boring
I'm just finishing my homework, so I can't talk yet.
Better
I'm finishing my homework right now, so I can't talk yet.
Only / merely (careful)
Nuance: Only
Can also mean “in a simple way.”
Boring
I just wanted to ask one question before the test started.
Better
I simply wanted to ask one question before the test started.
Exact meaning
Nuance: Exact
Use when just means “exactly.”
Boring
That is just what I meant.
Better
That is exactly what I meant.
Only / no more than (formal-ish)
Nuance: Only
More formal than only/just.
Boring
I just wanted to ask one question before the test started.
Better
I merely wanted to ask one question before the test started.
Recent time
Nuance: Recent
More formal than just now.
Boring
I just finished my homework, so I can help you now.
Better
I recently finished my homework, so I can help you now.
Exact timing
Nuance: Exact timing
Common and clear.
Boring
I arrived just in time for the bell.
Better
I arrived right on time for the bell.
Barely
Nuance: Barely
Clear and common.
Boring
I just caught the bus before it pulled away.
Better
I barely caught the bus before it pulled away.
Barely (common)
Nuance: Barely
Common; means barely.
Boring
I just caught the bus before it pulled away.
Better
I hardly caught the bus before it pulled away.
Exact meaning (formal)
Nuance: Exact
Formal; use for exactness.
Boring
That is just what I meant.
Better
That is precisely what I meant.
Barely (formal)
Nuance: Barely
Formal; means barely.
Boring
I just caught the bus before it pulled away.
Better
I scarcely caught the bus before it pulled away.