identical
Word family
- identicallyadverbB2
- identitynounB1
- identificationnounB2
- identifyverbB1
Synonym discussion
Sense: adjective/1
Identical is the strongest of these words — it means matching in every detail, without any difference at all. Same is the most common and general word; it can be used in many situations where the match is not exact (same colour, same idea). Equivalent is more abstract — two things with the same value, effect, or meaning are equivalent even if they look different, like equivalent grades at different schools. Indistinguishable focuses on perception: you cannot tell the two apart with your eyes or senses. For example, two chairs from the same factory are identical, your answer and mine are the same, earning the same score is equivalent, and two handwriting samples that look exactly alike are indistinguishable.
Common collocations
Etymology
Identical comes from the Latin word identicus, which was built from idem meaning 'the same'. Late Latin created identitas ('sameness'), and from there French and English developed the modern adjective. The sense about twins (monozygotic) developed in the 1800s as scientists began to understand how human reproduction works.