think through

From Wiktionary

Verb[change]

Plain form
think through

Third-person singular
thinks through

Past tense
thought through

Past participle
thought through

Present participle
thinking through

  1. to spend enough time thinking about something to make sure it will work
    "That plan was well thought through."
    Usage Note: Unless the passive voice is used, the object of this verb is placed between the two words.
    "He thought the plan through for over two weeks."