inscrutably.

In a way that makes thoughts, feelings, or intentions impossible or very difficult to read.

Use it for

Words that belong together

• look inscrutably
• gaze inscrutably

On the page

The curator watched inscrutably as the argument unfolded.

Usage notes

Primary category: literary / elevated general. Forms: Invariable adverb. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: description, character. Commonness: moderately common.