virtually
Word family
Synonym discussion
Sense: adverb/1
Almost is the most general and neutral of these four, suitable for any context where something falls just short of a goal ('almost finished'). Nearly is preferred with numbers and measurements ('nearly 200 people'), and carries a slightly more objective tone. Practically overlaps with virtually but feels more informal and everyday; it stresses what the real-world effect is ('practically no difference'). Essentially shifts focus from quantity to core identity — it means 'when you look at the most important features' ('He is essentially self-taught'). Virtually sits close to practically in register but often appears in slightly more formal or written contexts. Use virtually when you want to emphasise that the gap between what is said and what is real is too small to matter in practice: 'The work is virtually done' suggests only trivial finishing touches remain.
Etymology
Comes from the Latin 'virtus', meaning strength or excellence. In Late Latin, 'virtualis' developed the sense 'having power or effect without physical form'. This idea of 'being something in effect though not in name' entered English in the 1600s. The computer meaning emerged in the 1950s with 'virtual memory' (simulated extra memory) and expanded in the 1990s with the internet to describe meetings, classrooms, and other activities conducted through screens instead of in person.