What does fulfil mean?
Fulfil is a verb meaning to bring something to completion or to satisfy a need, duty, or expectation. It operates in two broad ways: externally, one fulfils promises, contracts, obligations, orders, and requirements — as when a supplier fulfils an order or a citizen fulfils a legal duty; internally, one fulfils hopes, ambitions, roles, and personal potential, as when a musician at last fulfils a lifelong dream. The word carries strongly positive connotations of completeness and satisfaction, and the derived adjective-like sense of feeling 'fulfilled' is central to modern talk of meaningful work and relationships. Usage is universal across formal and informal registers, from contract law to self-help writing. Note that spelling differs by region: most English-speaking countries write 'fulfil', while Americans write 'fulfill'. Its flexibility — spanning the concrete (a condition met) and the abstract (a life made meaningful) — makes it one of the most quietly versatile verbs in English.
verbTo fulfil is to bring to completion or realization; to satisfy a requirement, duty, promise, hope, or role.
- To carry out or complete a duty, promise, order, or obligation.
- To satisfy or meet a requirement, condition, or expectation.
- To realize or bring to fruition a personal ambition, potential, or desire.
"She finally fulfilled her lifelong ambition of running a marathon."
"The contractor fulfilled every term of the agreement ahead of schedule."
"Teaching in a rural school gave him a sense of purpose he had never felt before — it truly fulfilled him."
One little word, two spellings: Britons write 'fulfil' with two l's, Americans write 'fulfill' with three — both are correct on their own side of the Atlantic.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fulfil
Fulfil comes from the Old English 'fulfillan', formed by combining 'full' with 'fillan' (to fill), literally meaning to fill something up completely. This native Germanic compound has no Latin or Greek root, so it shares its origin not with classical cognates but with the broader family of English 'fill'-related words. The spelling later diverged: British practice settled on 'fulfil' while American practice adopted 'fulfill', mirroring other doubled-consonant differences between the two dialects. Its derivatives — fulfilment, fulfilled, fulfilling — all descend directly from the same Old English source.
Related word forms
How fulfil is actually used
The verb carries positive connotations of completion and satisfaction, especially when used about personal ambitions ('a fulfilling career'). Spelling varies regionally: 'fulfil' (one final l) is standard in the UK, Ireland, Australia and most Commonwealth countries, while 'fulfill' (two final l's) is standard in the US; corresponding derivative forms follow the same pattern ('fulfilment' vs 'fulfillment'). The verb is neutral in register, appearing equally in legal, business, and everyday contexts.
Easily confused with fulfil
'Fulfil' is the correct spelling with one 'l' in British usage, whereas 'fullfil' is a common misspelling; in American English the word is spelled 'fulfill' with two l's.