Bandwidth
noun /ˈbændwɪdθ/ — The mental and practical capacity you have to take things on.
Definition
Originally a technical term for data transmission capacity; now used to mean the mental, emotional, or practical capacity to handle tasks, relationships, or information.
Beyond the definition
One of the rare tech-to-human migrations that actually captured something real. 'I don't have the bandwidth' describes a genuine experience — the feeling that there is nothing left to give. Bandwidth is finite, and pretending otherwise doesn't change the limit.
Origin & history
From electronics: the width of a frequency band, determining how much data can pass through. Migrated to common usage to describe human cognitive and attentional capacity.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
She simply didn't have the bandwidth for another project — she'd hit her limit weeks ago.
Bandwidth isn't about ambition. It's about what's physically possible to do well.
Good managers protect their team's bandwidth rather than filling it.
Synonyms
capacity, headspace, availability, attention, resources
Antonyms
excess capacity, availability, headroom
Related words
Bandwidth vs capacity
Bandwidth is metaphorically used to describe an individual's current mental or emotional availability to handle new tasks. Capacity is a more formal, objective measure of the total volume or potential one can hold.
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Exhausted person in crowded park

An adult sits slumped on a park bench, surrounded by the chaotic, swirling energy of a crowd, appearing utterly drained.
The person’s total exhaustion in the face of the world's struggles illustrates the depletion of mental and emotional capacity—the limit of what they can handle at a given moment.
Image credit: Wordspun · AI-generated conceptual illustration