いい線せんいってる

Meanings

1

expression, ichidan verb

on the right track; doing well; looking good

colloquial

Colloquial phrase used when someone's idea, work, or progress is heading in a good direction. Often used in casual conversation.

今いまのアイデア、いい線せんいってると思おもうよ。
I think your current idea is on the right track.

彼かれの料りょう理りは最さい近きんいい線せんいってるね。

His cooking has been coming along nicely lately.

Written forms

いい線せんいってる
Standard colloquial spelling using いい and いってる.
いい線せん行いってる
Variant using 行ってる; less common but seen.
良いい線せんいってる
Using 良い for いい; slightly more formal or emphatic.
良いい線せん行いってる
Combination of 良い and 行ってる; rarely used.

Kanji

線line, track
行going, journey, carry out
良good, pleasing, skilled

Similar words

いい感かんじ
いい感じ is a more general expression meaning 'good feeling' or 'seems good', while いい線いってる specifically implies being on the right track or making good progress.
順じゅん調ちょう
順調 is a more formal term meaning 'smooth' or 'favorable', used in both casual and formal contexts, whereas いい線いってる is colloquial and often used in informal settings.

Etymology

The phrase combines いい (good) with 線 (line, track) and いってる (progressive form of 行く, to go), literally meaning 'going along a good line'. It is a colloquial expression that emerged in modern Japanese.