Apex (4)
(Other definitions for acre that I've seen before include "region of ground" , "Four roods - Israeli port" , "Care about the land measure" , "Mediterranean port" , "Old unit of area - old port" .)
'apex' is the definition.
(synonyms)
This is all the clue.
(Other definitions for acme that I've seen before include "Aim of mountaineers" , "Height of perfection" , "Top or highest point" , "'Highest point, apex (4)'" , "Summit, crowning point" .)
'apex' is the definition.
(I know that apex can be written as peak)
This is the entire clue.
(Other definitions for peak that I've seen before include "Pointed mountain" , "Apex" , "Summit, often pointed" , "Tip" , "maximum pitch" .)
'apex' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cusp that I've seen before include "Point formed by two intersecting curves - point of transition" , "Horn of moon" , "Turning point on which important developments depend" , "Pointed end - division between signs of the zodiac" , "Prominence on a tooth" .)
'apex' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for pinnacle that I've seen before include "Acme" , "tip-top" , "The highest point, summit" , "Height of success" , "Crown" .)
(Other definitions for high-water mark that I've seen before include "Tide line on the beach" , "How far tide comes up" .)
'apex' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for zenith that I've seen before include "Highest point in the heavens" , "Meridian" , "The acme" , "Peak" , "Top point" .)
'apex' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for summit that I've seen before include "High point" , "Top or extreme point" , "Crown" , "Pinnacle or crest" , "important meeting" .)
'apex' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for top that I've seen before include "Toy; uppermost point" , "Most successful" , "The circus tent can be a big one" , "Zenith" , "Peak; child's toy" .)