Antonyms of adj firsthand

1 sense of firsthand

Sense 1
firsthand -- (received directly from a source; "firsthand information")

INDIRECT (VIA primary) -> secondary -- (being of second rank or importance or value; not direct or immediate; "the stone will be hauled to a secondary crusher"; "a secondary source"; "a secondary issue"; "secondary streams")

Similarity of adj firsthand

1 sense of firsthand

Sense 1
firsthand -- (received directly from a source; "firsthand information")
       => primary (vs. secondary) -- (of first rank or importance or value; direct and immediate rather than secondary; "primary goals"; "a primary effect"; "primary sources"; "a primary interest")

Synonyms of adv firsthand

1 sense of firsthand

Sense 1
firsthand, at first hand -- (from the original source; directly; "I heard this story firsthand")