impractical
Word family
- impracticallyadverbC1
- impracticalitynounC1
- practicaladjectiveB1
- practicallyadverbB2
- practicalitynounB2
- practicenounB1
- practiceverbB2
Synonym discussion
Sense: adjective/2
All four describe ideas or plans that are unlikely to succeed, but the nuance differs. 'Impractical' (B2) is the broadest — it means carrying out the plan would be too difficult, costly, or complicated in real life. 'Unrealistic' (B2) focuses on the plan not matching reality: expecting too much or ignoring genuine constraints. 'Unworkable' (C1) is more technical and suggests the plan simply cannot function as described — it has a fatal flaw. 'Unfeasible' (C1) is formal and implies the plan cannot be achieved given the resources available. For example: 'Building the bridge in three months was impractical (too many logistical hurdles), unrealistic (nobody checked the weather data), unworkable (the design had a structural flaw), and ultimately unfeasible (the budget didn't exist).'
Common collocations
Etymology
Formed in English in the mid-1800s by adding the prefix 'im-' (meaning 'not') to 'practical'. 'Practical' comes from Late Latin 'practicus' ('active'), which was borrowed from Greek 'praktikos' ('concerned with action'), itself from the verb 'prassein' ('to do, to act').