What are the opposite words for loosen?

Loosen can be defined as to make something less tight, strict, or firm. In contrast, its antonym can be the word tighten which means to make something firmer or tighter. It can also mean to restrict or control something strictly. Other antonyms of "loosen" include fasten, secure, fix, clench, or grip. Loosen has a multitude of opposite meanings depending on the context, for example, increase (as in tension), control (as in discipline), tie (as in bound). We use antonyms to express the opposite of a word, and they help us understand the meaning of the text and the speaker's intention.

Antonym of the day

in-, end-.