Antonyms of adj breakneck

1 sense of breakneck

Sense 1
breakneck -- (moving at very high speed; "a breakneck pace")

INDIRECT (VIA dangerous) -> safe -- (free from danger or the risk of harm; "a safe trip"; "you will be safe here"; "a safe place"; "a safe bet")

Similarity of adj breakneck

1 sense of breakneck

Sense 1
breakneck -- (moving at very high speed; "a breakneck pace")
       => dangerous (vs. safe), unsafe -- (involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions")