Word.ws English Dictionary

Past tense of complicate

regular verb

The past tense of complicate is complicated. The past participle is also complicated.

Forms of complicate

Base form (V1)complicate /ˈkɑmplɪkeɪt/
Past tense (V2)complicated /ˈkɒm.plɪ.keɪ.tɪd/
Past participle (V3)complicated /ˈkɒm.plɪ.keɪ.tɪd/
Present participlecomplicating
Third person singularcomplicates

Complicated in a sentence

  • John has been complicated in the affair by new tapes that surfaced.
  • I wish I'd commented this complicated algorithm back when I remembered how it worked.From the entry comment
  • The process of fixing the car engine was complicated by the lack of tools.From the entry complicated
  • Hands-on computing can make complicated computer tasks more natural to users.From the entry hands-on
  • It's still too complicated for me to understand. Can you give me the 'for dummies' version?From the entry for dummies

Meaning of complicate

  1. verb To make complex; to modify so as to make something intricate or difficult.
  2. verb To involve in a convoluted matter.
  3. verb To coexist with (another disease) creating a complication.

Full definition of complicate

Questions about the past tense of complicate

What is the past tense of complicate?
The past tense of complicate is complicated.
What is the past participle of complicate?
The past participle of complicate is complicated.
Is complicate a regular or irregular verb?
Complicate is a regular verb: its past tense adds -d.

Source and license

Adapted from Wiktionary: complicate (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

Last updated:

Cite this page: “Past tense of complicate.” Word.ws, https://word.ws/past-tense/complicate. Based on Wiktionary, CC BY-SA 4.0.