Unsettled by no self-confidence, one enters to propose (10)
I believe the answer is:
negotiable
'unsettled' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?
'no self-confidence one enters to propose' is the wordplay.
'no' becomes 'n' (common abbreviation).
'self confidence' becomes 'ego'.
'one' becomes 'I' (Roman numeral).
'enters' is an insertion indicator.
'to propose' becomes 'table' (I've seen this before).
'i' inserted into 'table' is 'tiable'.
'n'+'ego'+'tiable'='NEGOTIABLE'
'by' is the link.
Can you help me to learn more?
(Other definitions for negotiable that I've seen before include "open to question" , "Open to discussion" , "What can be mutually arranged by agreement - legally transferable" , "Subject to bargaining" .)