stipulate

Short definition from Wiktionary

Verb

1. 1
   To require (something) as a condition of a contract or agreement.
2. 2
   To specify, promise or guarantee something in an agreement.
3. 3
   To acknowledge the truth of; not to challenge.
4. 4
   To ask for a contractual term.
5. 5
   To mutually agree.

Adjective

1. 1
   Having stipules; that is, having outgrowths borne on either side of the base of the leafstalk.