Found 13 stronger alternatives to upgrade your writing.
Intensity (strong)
Nuance: Very strong
Stronger than really.
Boring
The hike was really steep, and my legs were shaking by the end.
Better
The hike was extremely steep, and my legs were shaking by the end.
Intensity (casual)
Nuance: Emphasis
Common in speech; emotional.
Boring
I was really tired after practice; I fell asleep before dinner.
Better
I was so tired after practice that I fell asleep before dinner.
Intensity (slang)
Nuance: Very
Slang/casual; not for formal essays.
Boring
That movie was really funny, and I laughed the whole time.
Better
That movie was super funny, and I laughed the whole time.
Intensity (simple)
Nuance: High intensity
Simple; less strong than really.
Boring
The instructions were really clear so I finished the assignment quickly.
Better
The instructions were very clear so I finished the assignment quickly.
Truth / in fact
Nuance: Fact
Better for truth/correction than for intensity.
Boring
It was really a fire drill, not a real emergency.
Better
It was actually a fire drill, not a real emergency.
Truth / in fact
Nuance: Fact
More formal; fits careful writing.
Boring
The museum is really free on Sundays.
Better
In fact, the museum is free on Sundays.
Intensity (strong)
Nuance: Very strong
Strong emphasis; can sound dramatic.
Boring
The final question was really hard, and even the top students got stuck.
Better
The final question was incredibly hard, and even the top students got stuck.
Truth / sincerity
Nuance: True
Can sound emotional/sincere.
Boring
I really appreciate your help with the group project.
Better
I truly appreciate your help with the group project.
Intensity (formal)
Nuance: Unusually high
Formal; means unusually strong.
Boring
The lab results were really consistent across every group.
Better
The lab results were exceptionally consistent across every group.
Intensity (very formal)
Nuance: Very strong
Very strong and formal.
Boring
The debate final was really intense, with the score tied until the last rebuttal.
Better
The debate final was extraordinarily intense, with the score tied until the last rebuttal.
Truth / sincerely
Nuance: Genuine
Means truly; sincere tone.
Boring
She was really grateful for your advice.
Better
She was genuinely grateful for your advice.
Truth / emphasis (formal)
Nuance: Emphasis
Formal; sounds academic.
Boring
The guest speaker really did spend six months on the space station.
Better
The guest speaker did indeed spend six months on the space station.
Truth / certainty (phrase)
Nuance: No doubt
Formal; means without any doubt.
Boring
The hurricane really damaged the roof, not just the gutters.
Better
The hurricane damaged the roof without question, not just the gutters.