Antonyms of adj thirdhand

1 sense of thirdhand

Sense 1
thirdhand -- (derived from what is primary or original by two intermediate steps; "a thirdhand report")

INDIRECT (VIA secondary) -> primary -- (of first rank or importance or value; direct and immediate rather than secondary; "primary goals"; "a primary effect"; "primary sources"; "a primary interest")

Similarity of adj thirdhand

1 sense of thirdhand

Sense 1
thirdhand -- (derived from what is primary or original by two intermediate steps; "a thirdhand report")
       => secondary (vs. primary) -- (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")

Synonyms of adv thirdhand

1 sense of thirdhand

Sense 1
thirdhand -- (by doubly indirect means; "I got the news thirdhand")