Antonyms of adj tangential

1 of 2 senses of tangential

Sense 1
digressive, tangential -- (of superficial relevance if any; "a digressive allusion to the day of the week"; "a tangential remark")

INDIRECT (VIA irrelevant) -> relevant -- (having a bearing on or connection with the subject at issue; "the scientist corresponds with colleagues in order to learn about matters relevant to her own research")

Similarity of adj tangential

2 senses of tangential

Sense 1
digressive, tangential -- (of superficial relevance if any; "a digressive allusion to the day of the week"; "a tangential remark")
       => irrelevant (vs. relevant) -- (having no bearing on or connection with the subject at issue; "an irrelevant comment"; "irrelevant allegations")

Sense 2
tangential -- (of or relating to or acting along or in the direction of a tangent; "tangential forces")