1. outer boundary

noun. The outside boundary or surface of something.
Synonyms
periphery bound edge boundary fringe
Antonyms
stand still free unbound uncertain unoriented

2. out-and-outer

noun. Someone who is excellent at something.
Synonyms
expert
Antonyms
generalist unskilled

3. boundary

noun. (ˈbaʊndɝi, ˈbaʊndri) The line or plane indicating the limit or extent of something.
Synonyms
extremity city line district line limit outline demarcation line surface hairline border borderline bounds frontier bourne mete bound delimitation edge end lineation county line bourn shoreline boundary line heliopause demarcation
Antonyms
uncover natural object inside outside descend

4. boundary

noun. (ˈbaʊndɝi, ˈbaʊndri) A line determining the limits of an area.
Synonyms
perimeter border thalweg bound line periphery rim edge upper bound threshold outer boundary verge margin lower bound brink fringe
Antonyms
disappear subsurface overhead maximal stand still

5. boundary

noun. (ˈbaʊndɝi, ˈbaʊndri) The greatest possible degree of something.
Synonyms
maximum knife-edge bound brink thermal barrier limit starkness heat barrier uttermost verge level best extent utterness absoluteness utmost
Antonyms
increase minimum maximum beginning middle

6. outer

adjective. (ˈaʊtɝ) Being on the outside or further from a center.
Synonyms
satellite outermost outside outmost spatial relation position out
Antonyms
inner inside indoor interior indoors

7. outer

adjective. (ˈaʊtɝ) Located outside.
Synonyms
outward
Antonyms
inward intrinsic

8. outer

adjective. (ˈaʊtɝ) Being on or toward the outside of the body.
Synonyms
external
Antonyms
internal leader
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