ような気がする【ようなきがする】

ような気がする means "I have a feeling that", "it feels like": you sense something is so but can't back it up. It follows a verb or an い-adjective in the plain form, past and negative included.

A な-adjective keeps な and a noun takes の, as they do before any ような.

• × 先生ような気がする → 先生のような気がする

ような気がする or と思う

とおもう思う gives an opinion you can stand behind. ような気がする is a hunch, so it also softens a statement you don't want to make too firmly.

Usage notes

These go beyond the basic ような気がする.

Without ような

気がする can follow the plain form directly, with the same meaning. This is common in conversation.

The negative

ような気がしない is "it doesn't feel like". In the question form, it asks whether the listener has the same feeling.