only
adverb
adjective
conjunction
informalThe traditional view is that the adverb only should be placed next to the word or words whose meaning it restricts: I have seen him only once rather than I have only seen him once. The argument for this, a topic which has occupied grammarians for more than 200 years, is that if only is not placed correctly the scope or emphasis is wrong, and could even result in ambiguity. But in normal, everyday English, the impulse is to state only as early as possible in the sentence, generally just before the verb. The result is, in fact, hardly ever ambiguous: few native speakers would be confused by the sentence I have only seen him once, and the supposed ‘logical’ sense often emerges only with further clarification, as in I’ve only seen him once, but I’ve heard him many times.