make certain

phrase

: to do something or find out something so that one has no doubt about whether something is true, correct, will happen, etc.

Make certain (that) you lock the door when you leave.

We must make certain this doesn't happen again.

She made certain she thanked each of them for coming.

Examples of make certain in a Sentence

Recent Examples on the Web

The company said the industrial chemical glycidyl methacrylate is used to make certain plastics, paints and coatings perform better. — ABC News, 21 Oct. 2026

According to the statement, glycidyl methacrylate is an industrial chemical used to make certain plastics, paints and coatings perform better. — Karma Sabbah, CBS News, 21 Oct. 2026

Hair oil is not a cure-all for scalp issues and can make certain scalp conditions worse. — Lauren Jarvis-Gibson, Fort Worth Star-Telegram, 21 Oct. 2026

Yes, your brain might go to angular guitars, but to lay claim to that genre, all a band really needs to do is make certain their music is not simply punk. — Brendan Hay, SPIN, 12 Oct. 2026

Rhymes for make certain

• bertin
• curtain
• uncertain