1lev·el 
/ˈlɛvəl/ noun
plural lev·els /ˈlɛvəl/ noun 1 a : a specific height [noncount] ▪ The pictures were hung on the wall at eye level. ▪ at street/ground level [count] ▪ The pictures were hung at different levels. — see also ground-level, sea level
b [count] : a part of a building that is at a specific height
▪ We were seated in the upper level [=floor] of the restaurant. — see also split-level 2 [count] : an amount of something
▪ There was a high level of alcohol/lead in his blood. ▪ a normal level of intelligence ▪ Prices have risen to a new level. ▪ He has shown a remarkable level of patience. [=he has been very patient] ▪ They have demonstrated a high level of interest [=they have been very interested] in this proposal. ▪ They checked the reservoir's water level. [=the amount of water in the reservoir] 3 [count] : a position or rank in a scale : a position that is high or low when compared to others
▪ She rose to the level of manager. ▪ She has reached a rare level of financial success. ▪ These problems affect people at all levels of society. ▪ Can this problem be dealt with at/on a national level or must it be addressed at/on an international level? — see also entry-level, high-level, low-level 4 [count] : a way of thinking about, talking about, or dealing with something
▪ The argument appeals to me on a purely intellectual level but fails to reach me on a deeper emotional level. ▪ I'm attracted to the job on many levels. ▪ He studied the changes in the chemical at the molecular level. [=he studied the changes in the molecules of the chemical] ▪ She has enjoyed great success in her professional life, but, on a (more) personal level, this has been a very stressful time. [=this has been a very stressful time in her personal life] 5 [count] : a device used to see when something is exactly flat —called also spirit level; — see picture at carpentry
b [count] : a part of a building that is at a specific height
▪ We were seated in the upper level [=floor] of the restaurant. — see also split-level
▪ There was a high level of alcohol/lead in his blood. ▪ a normal level of intelligence ▪ Prices have risen to a new level. ▪ He has shown a remarkable level of patience. [=he has been very patient] ▪ They have demonstrated a high level of interest [=they have been very interested] in this proposal. ▪ They checked the reservoir's water level. [=the amount of water in the reservoir]
▪ She rose to the level of manager. ▪ She has reached a rare level of financial success. ▪ These problems affect people at all levels of society. ▪ Can this problem be dealt with at/on a national level or must it be addressed at/on an international level? — see also entry-level, high-level, low-level
▪ The argument appeals to me on a purely intellectual level but fails to reach me on a deeper emotional level. ▪ I'm attracted to the job on many levels. ▪ He studied the changes in the chemical at the molecular level. [=he studied the changes in the molecules of the chemical] ▪ She has enjoyed great success in her professional life, but, on a (more) personal level, this has been a very stressful time. [=this has been a very stressful time in her personal life]
descend/sink/stoop to someone's level
: to behave as badly as someone who has treated you wrongly
▪ Despite my opponent's personal attacks against me, I refuse to stoop to his level. [=I refuse to behave as badly as he has by attacking him personally]
▪ Despite my opponent's personal attacks against me, I refuse to stoop to his level. [=I refuse to behave as badly as he has by attacking him personally]
on the level
informal : not false or dishonest
▪ Is this guy on the level? [=is this guy honest?]
▪ Is this guy on the level? [=is this guy honest?]
