この歯が不安定です。

この歯が不安定です。

This tooth is wobbly.

この歯(は)が不安定(ふあんてい)です。

Kono ha ga fuantei desu.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

歯 (は)

tooth

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

不安定 (ふあんてい)

instability; insecurity; crankiness

です (です)

be; is

Readings: シ、よわい、は、よわ.い、よわい.する

Meanings: tooth, cog

Readings: フ、ブ

Meanings: negative, non-, bad, ugly, clumsy

Readings: アン、やす.い、やす.まる、やす、やす.らか

Meanings: relax, cheap, low, quiet, rested, contented, peaceful

Readings: テイ、ジョウ、さだ.める、さだ.まる、さだ.か

Meanings: determine, fix, establish, decide