ちゅうちょするな。思い切って言いなさい。

Don't hesitate. Speak out.

ちゅうちょするな。思(おも)い切(き)って言(い)いなさい。

Chūchosuru na. omoikitte ii nasai.

躊躇 (ちゅうちょ)

hesitation; indecision; vacillation

な (な)

(sentence end, mainly masc.) indicates emotion or emphasis; (used with masu stem verb) command; (used with dictionary form verb) prohibition

思い切る (おもいきる)

to give up all thoughts of; to abandon; to despair of; to make up one's mind; to take a momentous decision

言う (いう、ゆう)

to say; to utter; to declare; to name; to call; to go (e.g. "the alarm went ping"); to make a noise

為さる (なさる)

to do

Readings: シ、おも.う、おもえら.く、おぼ.す

Meaning: think

Readings: セツ、サイ、き.る、 -き.る、き.り、 -き.り、 -ぎ.り、き.れる、 -き.れる、き.れ、 -き.れ、 -ぎ.れ

Meanings: cut, cutoff, be sharp

Readings: ゲン、ゴン、い.う、こと

Meanings: say, word