the appearance or semblance of truth; likelihood; probability: The play lacked verisimilitude. something, as an assertion, having merely the appearance of truth.
The contribution limits apply to each individual, so married couples may be able to contribute the contribution limit for both spouses. For example, in 2017, a married couple, both of whom are over age 50, may contribute a total of $13,000 ($6,500 each, if there is enough earned income to support this level of contribution). Note: You may continue to fund your IRA for 2016 through April 18, 2017.
As you can see from the chart, if you make over $129,000 as an individual or $191,000 as a married couple, you can no longer contribute the maximum $5,500 to your Roth IRA. The government deems any income above such amounts is enough for you to find alternative retirement savings options besides the 401(k).