〜ようだ（推量） you da
〜ようだ（推量）（you da）means “it seems that ~, it looks like ~ (conjecture)”. Expresses a conjecture or impression based on what the speaker senses or observes. Formation: V（普通形）/ Aい / Aな + な / N + の + ようだ（ようです）
it seems that ~, it looks like ~ (conjecture)
N4Formation
V（普通形）/ Aい / Aな + な / N + の + ようだ（ようです）
Explanation
Expresses a conjecture or impression based on what the speaker senses or observes. It is a fairly objective, evidence-based guess ('it seems/looks like'). Note the connection: な-adjectives take な and nouns take の before ようだ.
Examples
Note
〜みたいだ is the casual equivalent. Compared with 〜らしい (hearsay/typical), ようだ is based more on the speaker's own direct observation.
FAQ
〜ようだ（推量） — what does it mean and how is it used?
it seems that ~, it looks like ~ (conjecture). Expresses a conjecture or impression based on what the speaker senses or observes. It is a fairly objective, evidence-based guess ('it seems/looks like'). Note the connection: な-adjectives take な and nouns take の before ようだ.
〜ようだ（推量） — how do you form it?
V（普通形）/ Aい / Aな + な / N + の + ようだ（ようです）
〜ようだ（推量） — any usage notes?
〜みたいだ is the casual equivalent. Compared with 〜らしい (hearsay/typical), ようだ is based more on the speaker's own direct observation.