大晦

おおつごもり

the last day of the year, New Year's Eve

晦渋

かいじゅう

ambiguous, obscure, equivocal

韜晦

とうかい

hidden (talents, etc.), self-concealment, self-effacement

晦冥

かいめい

darkness

晦朔

かいさく

last and first days of the month

大日

だいにち

Mahavairocana (Tathagata), Great Sun, Supreme Buddha of Sino-Japanese esoteric Buddhism

日大

にちだい

Nihon University (abbr)

晦ます

to conceal (oneself); to hide; to abscond

大吉日

very auspicious day

大日経

だいにちきょう

Mahavairocana Sutra

日体大

にったいだい

Nippon Sport Science University (abbr)

大明日

very auspicious day

大日本

Great Japan

天地晦冥

てんちかいめい

The world is covered in darkness, All is plunged into darkness

自己韜晦

じことうかい

concealing one's talents, position, status, intentions, etc.

韜晦趣味

とうかいしゅみ

propensity to efface oneself, being prone to conceal one's talent

大安吉日

たいあんきちじつ たいあんきちにち

very auspicious day for all types of occasions (one of the six special days in the Japanese lunisolar calendar)

朝日大学

あさひだいがく

Asahi University

日曜大工

にちようだいく

weekend carpenter, do-it-yourselfer