OK
'ok' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yeah that I've seen before include "quite casually" , "Positive (or sceptical) exclamation" , "Casual form of yes" , "Exclamation of agreement (or doubt!)" , "casual agreement" .)
(Other definitions for soso that I've seen before include "mediocre" , "Indifferent" .)
(Other definitions for endorse that I've seen before include "Advocate" , "Approve - support" , "Ratify" , "Support (with signature)" , "Give one's sanction to" .)
(Other definitions for average that I've seen before include "'Medium, middling (7)'" , "Usual - mediocre - mean" , "Mediocre - medium" , "building society customer loses capital over time" , "Mean; standard" .)
(Other definitions for approve that I've seen before include "Officially endorse" , "Deem satisfactory" , "Like" , "Sanction, ratify" , "Give sanctions to" .)
(Other definitions for alright that I've seen before include "very well, as some would put it" , "OK, as some would have it" , "Okay" , "Satisfactory or adequate" , "uninjured" .)
'ok' is the definition.
(both are expressions of agreement or approval)
This is the entire clue.
(Other definitions for righto that I've seen before include "Okey-dokey" , "Informal expression of agreement or acceptance" , "Correct" , "Okay!" , "Agreed" .)
'ok' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for assent that I've seen before include "Compliance, agreement" , "Consent or approval" , "Give consent" , "Okay" , "Express approval or agreement" .)
'ok' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for all right that I've seen before include "Very well, as you wish" , "Fair enough" , "never sinister?" , "Okay" , "Passable" .)
'ok' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for very well that I've seen before include "Yes, I suppose so" , "Agreed" , "I agree" , "A1" , "All right, an expression of consent" .)
'ok' is the definition.
(OK can mean yes)
This is the entire clue.
(Other definitions for yes that I've seen before include "I agree" , "Affirmative response" , "Affirmative answer" , "Agreed" , "Oui" .)
'ok' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for licit that I've seen before include "Permissible" , "Legal" , "Permitted by law" , "Not forbidden, lawful" , "Lawful, permitted" .)
'ok' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for acceptable that I've seen before include "Satisfactory, adequate" , "Of (marginally) satisfactory quality" .)