[nail down] {v. phr.}, {informal} To make certain; make sure; settle. […]

[narrow down] {v. phr.} To limit within very strict margins. * […]

[never mind] {v. phr.} Don't trouble about it; don't worry about […]

[never say die] {v. phr.} Don't quit; don't be discouraged. * […]

[nip in the bud] {v. phr.} To check at the outset; […]

[nose about] or [nose around] {v. phr.}, {informal} To look for […]

[nose down] {v.}, {of an aircraft} To head down; bring down […]

[nose in] (2) or [nose into] (2) {v.} To move in […]

[nose out] {v.}, {informal} 1. To learn by effort (something private […]

[nose over] {v.} To turn over on the nose so as […]