Often used to indicate a serious commitment, as signing a document permanently records an agreement. He inked in his partnership with the firm, solidifying his involvement.
Pro Tip 2/3
Final Step
Typically signifies the final step in negotiations or talks, symbolizing the agreement's completion. After months of discussion, they finally inked in the deal.
Pro Tip 3/3
Metaphorical Use
Can be used metaphorically to express certainty, even when no actual ink or paper is involved. With their verbal agreement, they inked in their future plans.