to extend, to prolong, to lengthen
[verb]
[ver-len-gen, ver-leng-de, ver-lengd] 

‘Verlengen’ means ‘to make longer’ in the broadest sense of the word. It’s also commonly used when renewing a contract. In some cases it can also mean ‘to enlarge’ if enlarging is realized by lengthening. Use it as you see fit

Examples:
- “Vanwege de bezuinigingen is de kans groot dat je contract niet verlengd wordt…” 
(“Due to the budget cuts the probability is high that your contract will not be renewed.”)

- “Als er na 90 minuten nog niet gescoord is, wordt de wedstrijd verlengd.” 
(“When after 90 minutes no one has scored a goal, the game will go in extra time.” The verb ‘scoren’ is used in general for ‘to score a goal’.)

- “Binnenkort kan ik mijn contract bij T-mobile verlengen en een nieuwe telefoon uitzoeken.” 
(“Soon it will be possible for me to extend my contract with T-mobile and choose/select a new phone.”)

- “Er is daar geen stopcontact dus we moeten het snoer verlengen.” 
(“There is no power socket over there so we have to extend the (power) cord.”)

Related words:
- Verlenging: extension, lengthening, overtime/extra time (of sports games) [noun] [de verlenging, de verlengingen].
- Verlengsnoer: extension cord [noun] [het verlengsnoer, de verlengsnoeren].
- Inkorten: to shorten [verb] [inkortte, ingekort].
- Beëindigen: to end [verb] [beëindigde, beëindigd].

Example:
- “We hebben het vaak opnieuw geprobeerd maar uiteindelijk was het het beste om de relatie te beëindigen.”
(“We have tried many times but eventually it was best to end the relationship.”)

- Vernieuwen: to renew [verb] [vernieuwde, vernieuwd].